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Rehman S, Ishtiaq S, Khalil-Ur-Rehman M, Kamran SH. Ameliorative effects of Atriplex crassifolia (C.A.Mey) on pain and inflammation through modulation of inflammatory biomarkers and GC-MS-based metabolite profiling. Inflammopharmacology 2024; 32:1187-1201. [PMID: 38367124 DOI: 10.1007/s10787-024-01430-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 01/05/2024] [Indexed: 02/19/2024]
Abstract
Atriplex crassifolia (A. crassifolia) is a locally occurring member of Chenopodiaceae family that has been used in folk medicine for the treatment of joint pain and inflammation. The present study was focused to determine the analgesic and anti-inflammatory potential of the plant. n-hexane (ACNH) and methanol (ACM) extracts of A. crassifolia were evaluated for in vitro anti-inflammatory potential using protein denaturation inhibition assay. In vivo anti-inflammatory potential was determined by oral administration of 250, 500, and 1000 mg/kg/day of extracts against carrageenan and formalin-induced paw edema models. Inflammatory mediators such as TNF-α, IL-10, IL-1β, NF-kB, IL-4, and IL-6 were estimated in blood samples of animals subjected to formalin model of inflammation. Analgesic activity was determined using acetic acid-induced writhing and tail flick assay model. Phytochemical profiling was done by GC-mass spectrophotometer. The results of in vitro anti-inflammatory activity revealed that both ACNH and ACM displayed eminent inhibition of protein denaturation in concentration-dependent manner. In acute in vivo carrageenan-induced paw edema model, both extracts reduced inflammation at 5th and 6th hour of study (p < 0.05). A. crassifolia extracts exhibited significant inhibition against formalin-induced inflammation with maximum effect at 1000 mg/kg. ACNH and ACM significantly augmented the inflammatory mediators (p < 0.05). Levels of TNF-α, IL-6, IL-1β, and NF-kB were reduced, while those of IL-4 and IL-10 were upregulated. ACNH displayed maximum analgesic effect at 1000 mg/kg, while ACM showed potent activity at 500 and 1000 mg/kg. The extracts restored the CBC, TLC and CRP toward normal. GC-MS analysis revealed the presence of compounds like n-hexadecanoic acid, Phytol, (9E,11E)-octadecadienoic acid, 2-hydroxy-1-(hydroxymethyl) ethyl ester, 1-hexacosene, vitamin E, campesterol, stigmasterol, gamma sitosterol in both extracts. These compounds have been reported to suppress inflammation by inhibiting inflammatory cytokines. The current study concludes that A. crassifolia possesses significant anti-nociceptive and anti-inflammatory potential owing to the presence of phytochemicals.
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Affiliation(s)
- Sarah Rehman
- Punjab University College of Pharmacy, University of the Punjab, Lahore, Pakistan
| | - Saiqa Ishtiaq
- Punjab University College of Pharmacy, University of the Punjab, Lahore, Pakistan.
| | | | - Sairah Hafeez Kamran
- Department of Pharmacology, Institute of Pharmacy, Faculty of Pharmaceutical and Allied Health Sciences, Lahore College for Women University, Lahore, 54000, Pakistan
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Jiang Q, Xiao D, Wang A, Yu Q, Yin Y, Wu J, Zhang Y, Jin T, Kuang B, Jia Y. CLEC4E upregulation in gastric cancer: A potential therapeutic target correlating with tumor-associated macrophages. Heliyon 2024; 10:e27172. [PMID: 38463883 PMCID: PMC10920739 DOI: 10.1016/j.heliyon.2024.e27172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/12/2024] Open
Abstract
Background CLEC4E has been reported to promote lung cancer progression. Tumor-associated macrophages (TAMs) play an important role in tumorigenesis. Whether the expression of CLEC4E in TAMs is associated with gastric carcinogenesis remains unclear. Methods The TIMER, UALCAN, UCSC Xena, and KM plotter databases are used to examine the expression of CLEC4E and its prognostic significance in gastric cancer (GC). Additionally, GO, KEGG, and GSEA analysis were conducted, and single-cell RNA-seq (scRNA-seq) datasets were utilized. The Coremine medical database was used to predict therapeutic drugs, and molecular docking was performed. Human GC samples were obtained, and co-culture models were constructed to evaluate the effects of CLEC4E in TAMs on tumor growth, migration, and invasion in vitro. Results CLEC4E was significantly upregulated in GC, and high CLEC4E expression was associated with poor prognosis. Western blotting and immunostaining showed increased protein levels of CLEC4E in GC. GO, KEGG, and GSEA results indicated that CLEC4E is involved in immune response. Immune infiltration analysis demonstrated that CLEC4E expression positively correlated with multiple immune cell types. scRNA-seq analyses revealed that CLEC4E was predominantly expressed in myeloid cells specifically TAMs, in GC. In vitro experiments confirmed that MFC induced CLEC4E expression in TAMs to mediate tumor progression. Specifically targeting CLEC4E by si-CLEC4E or stigmasterol inhibited cancer cell migration and invasion. Conclusion CLEC4E is a potential prognostic biomarker and new therapeutic target for GC that can be specifically targeted by stigmasterol.
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Affiliation(s)
- Qin Jiang
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Dan Xiao
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Ao Wang
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Qiong Yu
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Ying Yin
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Jingchong Wu
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Yan Zhang
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
| | - Tian Jin
- Department of Pathology, Hanchuan People's Hospital, Hanchuan, 431600, China
| | - Baicheng Kuang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yegui Jia
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, 430000, China
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Lim JH, Kim SE, Kim HJ, Song GG, Jung JH. Intra-articular injection of stigmasterol-loaded nanoparticles reduce pain and inhibit the inflammation and joint destruction in osteoarthritis rat model: A pilot study. Drug Deliv Transl Res 2024:10.1007/s13346-023-01501-w. [PMID: 38200400 DOI: 10.1007/s13346-023-01501-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2023] [Indexed: 01/12/2024]
Abstract
Stigmasterol, a plant-derived sterol, sharing structural similarity with cholesterol, has demonstrated anti-osteoarthritis (OA) properties, attributed to its antioxidant and anti-inflammatory capabilities. Given that OA often arises in weight bearing or overused joints, prolonged localized treatment effectively targets inflammatory aspects of the disease. This research explored the impact of stigmasterol-loaded nanoparticles delivered via intra-articular injections in an OA rat model. Employing mesoporous silica nanomaterials (MSNs) combined with β-cyclodextrin (β-CD) as a vehicle, stigmasterol was loaded in conjunction with tannic acid, forming stigmasterol/β-CD-MSNs to facilitate a sustained stigmasterol release. The study employed RAW 264.7 cells to examine the in vitro cytotoxicity and anti-inflammatory effect of stigmasterol/β-CD-MSNs. For in vivo experimentation, we used healthy control rats and monosodium iodoacetate (MIA)-induced OA rats, separated into five groups, varying the injection substances. In vitro findings indicated that stigmasterol/β-CD-MSNs suppressed the mRNA expression of key pro-inflammatory mediators such as interleukin-6, tumor necrosis factor-α, and matrix metalloproteinase-3 in a dose-dependent manner. In vivo experiments revealed a substantial decrease in the mRNA levels of pro-inflammatory factors in the stigmasterol(50 µg)/β-CD-MSN group compared to the others. Macroscopic, radiographic, and histological evaluations established that intra-articular injections of stigmasterol/β-CD-MSNs inhibited cartilage degeneration and subchondral bone deterioration. Therefore, in a chemically induced OA rat model, intra-articular stigmasterol delivery was associated with reduction in both local and systemic inflammatory responses, alongside a slowdown in joint degradation and arthritic progression.
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Affiliation(s)
- Ji Hyun Lim
- Korea University College of Medicine, Seoul, Republic of Korea
| | - Sung Eun Kim
- Department of Orthopedic Surgery and Nano-Based Disease Control Institute, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Hak-Jun Kim
- Korea University College of Medicine, Seoul, Republic of Korea
- Department of Orthopedic Surgery and Nano-Based Disease Control Institute, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Gwan Gyu Song
- Korea University College of Medicine, Seoul, Republic of Korea
- Division of Rheumatology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Jae Hyun Jung
- Korea University College of Medicine, Seoul, Republic of Korea.
- Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea.
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Dube NP, Tembu VJ, Nyemba GR, Davison C, Rakodi GH, Kemboi D, de la Mare JA, Siwe-Noundou X, Manicum ALE. In vitro cytotoxic effect of stigmasterol derivatives against breast cancer cells. BMC Complement Med Ther 2023; 23:316. [PMID: 37697361 PMCID: PMC10496295 DOI: 10.1186/s12906-023-04137-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 08/23/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Stigmasterol is an unsaturated phytosterol that belong to the class of tetracyclic steroids abundant in Rhoicissus tridentata. Stigmasterol is an important constituent since it has shown impressive pharmacological effects such as anti-osteoarthritis, anticancer, anti-diabetic, anti-inflammatory, antiparasitic, immunomodulatory, antifungal, antioxidant, antibacterial, and neuroprotective activities. Furthermore, due to the presence of π system and hydroxyl group, stigmasterol is readily derivatized through substitution and addition reactions, allowing for the synthesis of a wide variety of stigmasterol derivatives. METHODS Stigmasterol (1) isolated from Rhoicissus tridentata was used as starting material to yield eight bio-active derivatives (2-9) through acetylation, epoxidation, epoxide ring opening, oxidation, and dihydroxylation reactions. The structures of all the compounds were established using spectroscopic techniques, NMR, IR, MS, and melting points. The synthesized stigmasterol derivatives were screened for cytotoxicity against the hormone receptor-positive breast cancer (MCF-7), triple-negative breast cancer (HCC70), and non-tumorigenic mammary epithelial (MCF-12 A) cell lines using the resazurin assay. RESULTS Eight stigmasterol derivatives were successfully synthesized namely; Stigmasterol acetate (2), Stigmasta-5,22-dien-3,7-dione (3), 5,6-Epoxystigmast-22-en-3β-ol (4), 5,6-Epoxystigmasta-3β,22,23-triol (5), Stigmastane-3β,5,6,22,23-pentol (6), Stigmasta-5-en-3,7-dion-22,23-diol (7), Stigmasta-3,7-dion-5,6,22,23-ol (8) and Stigmast-5-ene-3β,22,23-triol (9). This is the first report of Stigmasta-5-en-3,7-dion-22,23-diol (7) and Stigmasta-3,7-dion-5,6,22,23-ol (8). The synthesized stigmasterol analogues showed improved cytotoxic activity overall compared to the stigmasterol (1), which was not toxic to the three cell lines tested (EC50 ˃ 250 µM). In particular, 5,6-Epoxystigmast-22-en-3β-ol (4) and stigmast-5-ene-3β,22,23-triol (9) displayed improved cytotoxicity and selectivity against MCF-7 breast cancer cells (EC50 values of 21.92 and 22.94 µM, respectively), while stigmastane-3β,5,6,22,23-pentol (6) showed improved cytotoxic activity against the HCC70 cell line (EC50: 16.82 µM). CONCLUSION Natural products from Rhoicissus tridentata and their derivatives exhibit a wide range of pharmacological activities, including anticancer activity. The results obtained from this study indicate that molecular modification of stigmasterol functional groups can generate structural analogues with improved anticancer activity. Stigmasterol derivatives have potential as candidates for novel anticancer drugs.
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Affiliation(s)
- Nondumiso Premilla Dube
- Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Vuyelwa Jacqueline Tembu
- Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Getrude R Nyemba
- Department of Biochemistry and Microbiology, Female Cancers Research at Rhodes University (FemCR2U), Makhanda/Grahamstown, 6140, South Africa
| | - Candace Davison
- Department of Biochemistry and Microbiology, Female Cancers Research at Rhodes University (FemCR2U), Makhanda/Grahamstown, 6140, South Africa
| | | | - Douglas Kemboi
- Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
- Department of Physical Sciences, University of Kabianga, Kericho, 2030, Kenya
| | - Jo-Anne de la Mare
- Department of Biochemistry and Microbiology, Female Cancers Research at Rhodes University (FemCR2U), Makhanda/Grahamstown, 6140, South Africa
| | - Xavier Siwe-Noundou
- Department of Pharmaceutical Sciences, Sefako Makgatho Health Sciences University, Pretoria, 0204, South Africa
| | - Amanda-Lee Ezra Manicum
- Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa.
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Janakiraman N, Anne Wincy J, Johnson M, Beatriz Herminia Ducati A, Eduardo de Oliveira Soares C, Saraiva de Alencar Beltrão C, Coutinho H. Chromatographic analysis of selected phytosterols from Cyathea and their characterization by in silico docking to potential therapeutic targets. Curr Res Toxicol 2023; 5:100115. [PMID: 37575338 PMCID: PMC10415621 DOI: 10.1016/j.crtox.2023.100115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 08/15/2023] Open
Abstract
Separation and quantification of lupeol, stigmasterol and swertiamarin in ethanolic extracts of selected Cyathea species have been developed using HPTLC and an attempt is made to explore the biopotential of phytochemicals against various proteins by computational analysis. Compounds were separated using the specific mobile phase and the developed plates were sprayed with respective spraying reagents. The 3D structure of the receptor proteins viz., 1VSN, 5BNQ, 6HN8, 7DN4 and 3TJU, and the 3D SDF structures of ligands like lupeol, stigmasterol and swertiamarin were retrieved from the Protein Data Bank (PDB) and NCBI-Pub Chem Compound database respectively. The Argus 4.0.1 is computer generated drug design screening software is employed to analyze the binding affinity of test compounds against the selected proteins in the form of E-values versus potential drug targets. The docking result was saved and visualized using Discovery Studio Visualizer. The terpenoid band with Rf value 0.79 depicted the presence of lupeol in C. gigantea (0.04%) and C. crinita (0.02%). The steroid band with Rf value 0.41 confirmed the presence of stigmasterol with varied frequency viz., C. nilgirensis (0.33%), C. gigantea (0.29%) and C. crinita (0.52%). Lupeol, stigmasterol and swertiamarin showed the interaction against the studied proteins viz., 1VSN, 5BNQ, 6HN8, 7DN4, 3TJU with varied energy values and interacting residues. The results of the virtual screening and molecular docking analysis suggest that the phytochemical compounds of Cyathea species viz., lupeol and stigmasterol were identified as possible lead molecules to fight against cancer and cytotoxicity.
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Affiliation(s)
- N. Janakiraman
- Centre for Plant Biotechnology, Department of Botany, St. Xavier’s College (Autonomous), Palayamkottai - 627 002, Tamil Nadu, India
- Department of Botany, The Madura College (Autonomous), Madurai 625 011, Tamil Nadu, India
| | - J. Anne Wincy
- Department of Computer Science, Sarah Tucker College (Autonomous), Perumalpuram - 627 007, Tirunelveli, Tamil Nadu, India
| | - M. Johnson
- Centre for Plant Biotechnology, Department of Botany, St. Xavier’s College (Autonomous), Palayamkottai - 627 002, Tamil Nadu, India
| | | | | | | | - H.D.M. Coutinho
- Coordinator of the Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri (URCA), 63105-000, Crato (CE), Brazil
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Goswami M, Jaswal S, Gupta GD, Kumar Verma S. A Comprehensive Update on Phytochemistry, Analytical Aspects, Medicinal Attributes, Specifications and Stability of Stigmasterol. Steroids 2023; 196:109244. [PMID: 37137454 DOI: 10.1016/j.steroids.2023.109244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/05/2023]
Abstract
Phytosterols are bioactive substances naturally found in plant cell membranes, and their chemical structure is comparable to cholesterol found in mammalian cells. They are widely distributed in plant foods like olive oil, nuts, seeds, and legumes. Amongst the variety of phytosterols, stigmasterol is the vital compound found abundantly in plants. Numerous hormones, including estrogen, progesterone, corticoids and androgen, are synthesized by stigmasterol. Multiple in-vitro and in-vivo investigations have shown that stigmasterol has various biological effects, including antioxidant, anticancer, antidiabetic, respiratory diseases, and lipid-lowering effects. Experimental research on stigmasterol provides indisputable proof that this phytosterol has the potential to be employed in supplements used to treat the illnesses mentioned above. This substance has a high potential, making it a noteworthy medication in the future. Although several researchers have investigated this phytosterol to assess its prospective qualities, it has not yet attained therapeutic levels, necessitating additional clinical studies. This review offers a comprehensive update on stigmasterol, including chemical framework, biosynthesis, synthetic derivatives, extraction and isolation, analytical aspects, pharmacological profile, patent status, clinical trials, stability and specifications as per regulatory bodies.
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Affiliation(s)
- Megha Goswami
- Department of Pharmacognosy, ISF College of Pharmacy, Moga-142 001 (Punjab), India
| | - Shalini Jaswal
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Moga-142 001 (Punjab), India
| | - Ghanshyam Das Gupta
- Department of Pharmaceutics, ISF College of Pharmacy, Moga-142 001 (Punjab), India
| | - Sant Kumar Verma
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Moga-142 001 (Punjab), India.
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Mongkolpobsin K, Sillapachaiyaporn C, Nilkhet S, Tencomnao T, Baek SJ. Stigmasterol isolated from Azadirachta indica flowers attenuated glutamate-induced neurotoxicity via downregulation of the Cdk5/p35/p25 signaling pathway in the HT-22 cells. Phytomedicine 2023; 113:154728. [PMID: 36898255 DOI: 10.1016/j.phymed.2023.154728] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 12/04/2022] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Glutamate, an excitatory neurotransmitter, was elevated in the brain of neurodegenerative disease (ND) patients. The excessive glutamate induces Ca2+ influx and reactive oxygen species (ROS) production which exacerbates mitochondrial function, leading to mitophagy aberration, and hyperactivates Cdk5/p35/p25 signaling leading to neurotoxicity in ND. Stigmasterol, a phytosterol, has been reported for its neuroprotective effects; however, the underlying mechanism of stigmasterol on restoring glutamate-induced neurotoxicity is not fully investigated. PURPOSE We investigated the effect of stigmasterol, a compound isolated from Azadirachta indica (AI) flowers, on ameliorating glutamate-induced neuronal apoptosis in the HT-22 cells. STUDY DESIGN To further understand the underlying molecular mechanisms of stigmasterol, we investigated the effect of stigmasterol on Cdk5 expression, which was aberrantly expressed in glutamate-treated cells. Cell viability, Western blot analysis, and immunofluorescence are employed. RESULTS Stigmasterol significantly inhibited glutamate-induced neuronal cell death via attenuating ROS production, recovering mitochondrial membrane depolarization, and ameliorating mitophagy aberration by decreasing mitochondria/lysosome fusion and the ratio of LC3-II/LC3-I. In addition, stigmasterol treatment downregulated glutamate-induced Cdk5, p35, and p25 expression via enhancement of Cdk5 degradation and Akt phosphorylation. Although stigmasterol demonstrated neuroprotective effects on inhibiting glutamate-induced neurotoxicity, the efficiency of stigmasterol is limited due to its poor water solubility. We conjugated stigmasterol to soluble soybean polysaccharides with chitosan nanoparticles to overcome the limitations. We found that the encapsulated stigmasterol increased water solubility and enhanced the protective effect on attenuating the Cdk5/p35/p25 signaling pathway compared with free stigmasterol. CONCLUSION Our findings illustrate the neuroprotective effect and the improved utility of stigmasterol in inhibiting glutamate-induced neurotoxicity.
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Affiliation(s)
- Kuljira Mongkolpobsin
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Program in Clinical Biochemistry and Molecular Medicine, Chulalongkorn University, Bangkok 10330, Thailand; Laboratory of Signal Transduction, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, South Korea
| | - Chanin Sillapachaiyaporn
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Program in Clinical Biochemistry and Molecular Medicine, Chulalongkorn University, Bangkok 10330, Thailand; Laboratory of Signal Transduction, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, South Korea
| | - Sunita Nilkhet
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Program in Clinical Biochemistry and Molecular Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand; Natural Products for Neuroprotection and Anti-ageing (Neur-Age Natura) Research Unit, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Seung Joon Baek
- Laboratory of Signal Transduction, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, South Korea.
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Li S, Xu F, Yu L, Yu Q, Yu N, Fu J. Stigmasterol protects human brain microvessel endothelial cells against ischemia-reperfusion injury through suppressing EPHA2 phosphorylation. Chin J Nat Med 2023; 21:127-35. [PMID: 36871980 DOI: 10.1016/S1875-5364(23)60390-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Indexed: 03/07/2023]
Abstract
Stigmasterol is a plant sterol with anti-apoptotic, anti-oxidative and anti-inflammatory effect through multiple mechanisms. In this study, we further assessed whether it exerts protective effect on human brain microvessel endothelial cells (HBMECs) against ischemia-reperfusion injury and explored the underlying mechanisms. HBMECs were used to establish an in vitro oxygen and glucose deprivation/reperfusion (OGD/R) model, while a middle cerebral artery occlusion (MCAO) model of rats were constructed. The interaction between stigmasterol and EPHA2 was detected by surface plasmon resonance (SPR) and cellular thermal shift assay (CETSA). The results showed that 10 μmol·L-1 stigmasterol significantly protected cell viability, alleviated the loss of tight junction proteins and attenuated the blood-brain barrier (BBB) damage induced by OGD/R in thein vitro model. Subsequent molecular docking showed that stigmasterol might interact with EPHA2 at multiple sites, including T692, a critical gatekeep residue of this receptor. Exogenous ephrin-A1 (an EPHA2 ligand) exacerbated OGD/R-induced EPHA2 phosphorylation at S897, facilitated ZO-1/claudin-5 loss, and promoted BBB leakage in vitro, which were significantly attenuated after stigmasterol treatment. The rat MCAO model confirmed these protective effects in vivo. In summary, these findings suggest that stigmasterol protects HBMECs against ischemia-reperfusion injury by maintaining cell viability, reducing the loss of tight junction proteins, and attenuating the BBB damage. These protective effects are at least meditated by its interaction with EPHA2 and inhibitory effect on EPHA2 phosphorylation.
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Xu Z, Wang C, Luan Z, Zhang D, Dong B. Exploring the potential targets of the Abrus cantoniensis Hance in the treatment of hepatitis E based on network pharmacology. Front Vet Sci 2023; 10:1155677. [PMID: 37035802 PMCID: PMC10076809 DOI: 10.3389/fvets.2023.1155677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
Hepatitis E is a disease of public health significance caused by the cross-species transmission of zoonotic hepatitis E virus (HEV) infection. There are no specific drugs. In this study, network pharmacology was used to reveal the mechanism of treatment of the active constituents of the Abrus cantoniensis Hance on hepatitis E. Based on the previously published representative components of A. cantoniensis Hance, we were screened the active components with OB ≥ 20% and DL ≥ 0.1 in A. cantoniensis Hance based on the TCMSP, predicted the target online through Swiss target prediction, and integrated the hepatitis E target in the GeneCards and DisGenet databases. Then, the core target was screened and the GO and KEGG enrichment and the network of the drug-active-ingredient-disease-pathway-target analysis were performed by the Cytoscape software. There were 11,046 hepatitis E targets, including PI3K-AKt, SRC, MAPK, PTPN11, EGFR, STAT1 and so on. The core ingredients include Oleanolic acid, Butin, β-sitosterol, Soyasapogenol E, 5,7-dihydroxy-2-methyl-8-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one, Stigmasterol, Emodin, Physcion, and Enoxolone. A total of 1,410 GO enrichment results of core targets, including 1,246 biological process, 51 cell composition and 113 molecular function results. KEGG pathway was enriched in 150 related pathways, suggesting that A. cantoniensis Hance acts on cancer signaling pathway, endocrine resistance pathway, PI3K-AKt signaling pathway, MAPK, TNF and other signaling pathway. Through key components such as Oleanolic acid, Butin, β-sitosterol, Stigmasterol, and Enoxolone and other components interferes with AKT1, IL-6 and TNF, and regulates pathway in cancer, PI3K-AKt signaling pathway and MAPK pathway to play a therapeutic role in hepatitis E.
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Affiliation(s)
- Ziheng Xu
- School of Public Health and Management, Guang University of Chinese Medical, Nanning, Guangxi, China
| | - Can Wang
- Guangxi Key Laboratory of Veterinary Biotechology, Guangxi Veterinary Research Institute, Nanning, Guangxi, China
| | - Zuxiang Luan
- Department of Employment, Nanning Normal University, Nanning, Guangxi, China
| | - Dapei Zhang
- School of Public Health and Management, Guang University of Chinese Medical, Nanning, Guangxi, China
| | - Baiqing Dong
- School of Public Health and Management, Guang University of Chinese Medical, Nanning, Guangxi, China
- *Correspondence: Baiqing Dong
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Nissanka MC, Weerasekera MM, Dilhari A, Dissanayaka R, Rathnayake S, Wijesinghe GK. Phytomedicinal properties of Hygrophila schulli (Neeramulliya). Iran J Basic Med Sci 2023; 26:979-986. [PMID: 37605731 PMCID: PMC10440129 DOI: 10.22038/ijbms.2023.67965.14877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 03/15/2023] [Indexed: 08/23/2023]
Abstract
Hygrophila schulli which is known as "Neermulli'' in the vernacular is an herbaceous plant native to Sri Lanka. Ancient medicinal literature suggests the use of H. schulli whole plant or its parts for the treatment of different communicable and non-communicable diseases including diabetes mellitus and tuberculosis. Active constituents and secondary metabolites including alkaloids, tannins, steroids, proteins, flavonoids, and glycosides are identified to possess antimicrobial, antitumor, antioxidant, hepatoprotective, anthelmintic, nephroprotective, antidiabetic, anticataract, anti-inflammatory, anti-nociceptive, hematopoietic, diuretic, antiurolithiatic, antipyretic, neuroprotection, and anti-endotoxin activities. In this review, we reviewed clinical studies, patents, and analytical studies from the earliest found examples from 1886 to the end of 2021. We critically analyzed and attempt to summarize the information based on bioactivities and chemical composition of H. schulli plant extracts which will be of future use for researchers in this field.
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Affiliation(s)
- Malshani Chathuranika Nissanka
- Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
- Department of Basic Sciences, Faculty of Allied Health Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Manjula Manoji Weerasekera
- Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Ayomi Dilhari
- Department of Basic Sciences, Faculty of Allied Health Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Ranga Dissanayaka
- Department of Pharmacy and Pharmaceutical Sciences, Faculty of Allied Health Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Sajeewa Rathnayake
- The Centre for Infectious Diseases and Phytochemical Studies, Faculty of Integrated Life Sciences, Quest International University Perak, Perak, Malaysia
| | - Gayan Kanchana Wijesinghe
- Bristol Dental School, University of Bristol, United Kingdom
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
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11
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AmeliMojarad M, AmeliMojarad M, Pourmahdian A. The inhibitory role of stigmasterol on tumor growth by inducing apoptosis in Balb/c mouse with spontaneous breast tumor (SMMT). BMC Pharmacol Toxicol 2022; 23:42. [PMID: 35725497 PMCID: PMC9208195 DOI: 10.1186/s40360-022-00578-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 06/03/2022] [Indexed: 12/24/2022] Open
Abstract
Background Breast cancer is one of the most common types of cancer in women worldwide. Anti-apoptotic activity of cancer cells is considered the main reason for drug resistance in BC which reduces the 5-year survival rate of patients and is still considered the main obstacle for cancer therapy. Stigmasterol (SS) is natural phytosterols compound in the plant which has been proved to play an important role to lower cholesterol and inducing anti-inflammatory, and anticancer properties. Methods In this, study, we aimed to evaluate the effect of SS on the expression of anti-apoptotic genes (Bcl-2 and BCL-XL), and also evaluate its effects on cell apoptosis and cell viability using MCF-7 cell line as well as evaluating its effect on tumor growth of spontaneous breast tumor (SMMT) in vivo. Result SS significantly decreased the expression of Bcl-2 and BCL-XL genes (*P < 0.05), induced apoptosis, and reduced cell proliferation in MCF-7 cell lines. Our in vivo study also indicated that SS could inhibit tumor size after treatment with (0, 10, 20 µM) compared to the normal control. Conclusion SS can be suggested as a potential agent in BC cancer treatment or as an adjuvant based on its ability to decrease the expression of Bcl-2 and BCL-XL genes and induce apoptosis.
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Affiliation(s)
- Mandana AmeliMojarad
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Melika AmeliMojarad
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Pourmahdian
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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12
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Balkrishna A, Nain P, Joshi M, Kumar B, Varshney A. Super-critical fluid extract of Bryonopsis laciniosa (Shivlingi) seeds restores fertility in zebrafish models through revival of cytological and anatomical features. J Ovarian Res 2022; 15:46. [PMID: 35477469 PMCID: PMC9044614 DOI: 10.1186/s13048-022-00982-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/07/2022] [Indexed: 11/10/2022] Open
Abstract
Background The Ayurvedic system of medicine mentions the use of seeds of Bryonopsis laciniosa (L.) Naud. (also known as Shivlingi due to their unique structure resembling a ‘Shivling’) for treating sexual dysfunction, impaired fertility, and as a general virility-booster in both males and females. To investigate the scientific basis for such claims, the current study was designed for the chemical characterization of the super critical fluid extracted Shivlingi seed oil (SLSO), and subsequent evaluation of its reproductive fecundity in the zebrafish model of N-ethyl-N-nitrosourea induced infertility. Results Linoleic and linolenic acids were the major fatty acids in the SLSO, with trace amounts of β-sitosterol and stigmasterol. Both male and female zebrafish, when fed orally with the SLSO infused pallets, showed a dose-dependent increase in fertility and fecundity rates. Microscopic observations revealed recovery in the gross ovarian anatomy and consequential improvement in egg production in infertile female zebrafish. Similarly, cytological studies exhibited increased sperm counts and motility in male zebrafish. SLSO exhibited effects similar to the human equivalent dose of Letrozole. Conclusion Taken together, these observations demonstrated the fertility-boosting potentials of SLSO comparable to the widely used infertility drugs. As a whole, this research work has provided scientific evidence for the rationale behind the use of Shivlingi seeds in Ayurvedic treatment for infertility in humans. Finally, but importantly, this study warrants further scientific investigations into different aspects of SLSO on human reproductive health.
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Affiliation(s)
- Acharya Balkrishna
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar, 249 405, Uttarakhand, India.,Department of Allied and Applied Sciences, University of Patanjali, Patanjali Yog Peeth, Roorkee-Haridwar Road, Haridwar, 249 405, Uttarakhand, India
| | - Pradeep Nain
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar, 249 405, Uttarakhand, India
| | - Monali Joshi
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar, 249 405, Uttarakhand, India
| | - Brijesh Kumar
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar, 249 405, Uttarakhand, India
| | - Anurag Varshney
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar, 249 405, Uttarakhand, India. .,Department of Allied and Applied Sciences, University of Patanjali, Patanjali Yog Peeth, Roorkee-Haridwar Road, Haridwar, 249 405, Uttarakhand, India. .,Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi, India.
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13
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Chaudhary RK, Karoli SS, Dwivedi PSR, Bhandari R. Anti-diabetic potential of Corn silk (Stigma maydis): An in-silico approach. J Diabetes Metab Disord 2022; 21:445-54. [PMID: 35673494 DOI: 10.1007/s40200-022-00992-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/26/2022] [Indexed: 10/19/2022]
Abstract
Corn silk is known to possess anti-diabetic activity, the current study is aimed to predict the binding affinity of bio-actives from corn silk against targets involved in diabetes mellitus i.e. Protein Tyrosine Phosphatase 1-B (PTP1B), Glucose Transporter-1 (GLUT1), Dipeptidyl Peptidase-4 (DPP4), α-glucosidase, and α-amylase. The 3D molecular structure of bio-actives was retrieved from the PubChem database and the structure of targets was retrieved from protein data bank. Later, hetero atoms were removed using Discovery studio visualizer 2019. Molecular docking was performed using Autodock4.0. Ten different poses were obtained from which the pose possessing the highest binding affinity was visualized for protein-ligand interaction in Discovery studio visualizer 2019. Twenty-six bio-actives were docked against five different targets i.e. PTPN1B, GLUT1, DPP4, α-glucosidase, and α-amylase from which flavones were found to possess the highest binding affinity towards PTPN1B with a binding energy of -8.5 kcal/mol. Similarly, β-carotene, gallotannins, 3-O-caffeoylquinic acid, and stigmasterol were predicted to possess the highest binding affinity towards GLUT1, DPP4, α-glucosidase, and α-amylase with binding energy -11.1 kcal/mol, -10.7 kcal/mol, -8.9 kcal/mol, and -9.8 kcal/mol respectively. Our study screened the anti-diabetic potential of 26 bio-actives towards five different diabetic proteins indicating a possibility of bio-actives from corn silk to possess anti-diabetic potential which needs to be further validated via experimental protocols; this serves as a future scope as well as lacuna for the present study. Thus, bio-actives from corn silk have anti-diabetic potential and can be used in the future to investigate and develop novel anti-diabetic molecule.
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14
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Mo Z, Xu P, Li H. Stigmasterol alleviates interleukin-1beta-induced chondrocyte injury by down-regulatingsterol regulatory element binding transcription factor 2 to regulateferroptosis. Bioengineered 2021; 12:9332-9340. [PMID: 34806937 PMCID: PMC8810005 DOI: 10.1080/21655979.2021.2000742] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Stigmasterol (STM), one of the main active components of Achyranthes bidentata, has been shown to effectively inhibit proinflammatory factors and matrix degradation in chondrocytes. However, the effect of STM on interleukin (IL)-1β-induced chondrocytes and its specific mechanism remain unclear. The purpose of the present study was to explore the effect and mechanism of sterol regulatory element binding transcription factor 2 (SREBF2) on IL-1β induced chondrocytes in the presence of STM. CCK-8 was used to detect the effect of STM on the cell viability of mouse chondrogenic cells (ATDC5). After ATDC5 cells were induced by IL-1β, the expression of SREBF2 in osteoarthritis cells was detected by RT-qPCR. The content of iron ion in the cells was detected by using an iron colorimetric assay kit. After further transfection of a SREBF2 overexpressing vector (Oe-SREBF2) or addition of a ferroptosis inhibitor, the expression levels of inflammation and matrix degradation-related proteins were detected via Western blotting. The levels of oxidative stress in cells were determined by using an ELISA kit. The results revealed that STM had no significant effect on the viability of ATDC5 cells. STM reduced IL-1β-induced ATDC5 cell damage and ferroptosis through SREBF2 and enhanced the inhibitory effect of ferroptosis inhibitors on IL-1β-induced ATDC5 cell injury. The present data suggest that STM attenuated chondrocyte injury induced by IL-1β by regulating ferroptosis via down-regulation of SREBF2, and may have potential as a novel therapeutic method for knee osteoarthritis.
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Affiliation(s)
- Zhisheng Mo
- Department of Orthopedics, Shenzhen Hospital of Beijing University of Chinese Medicine (Longgang), Shenzhen, P.R. China
| | - Peiqing Xu
- Department of Orthopedics, Shenzhen Hospital of Beijing University of Chinese Medicine (Longgang), Shenzhen, P.R. China
| | - Huanyu Li
- Department of Orthopedics, Shenzhen Hospital of Beijing University of Chinese Medicine (Longgang), Shenzhen, P.R. China
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15
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Lu Y, Kronzucker HJ, Shi W. Stigmasterol root exudation arising from Pseudomonas inoculation of the duckweed rhizosphere enhances nitrogen removal from polluted waters. Environ Pollut 2021; 287:117587. [PMID: 34182390 DOI: 10.1016/j.envpol.2021.117587] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/25/2021] [Accepted: 06/10/2021] [Indexed: 06/13/2023]
Abstract
Rhizospheric microorganisms such as denitrifying bacteria are able to affect 'rhizobioaugmention' in aquatic plants and can help boost wastewater purification by benefiting plant growth, but little is known about their effects on the production of plant root exudates, and how such exudates may affect microorganismal nitrogen removal. Here, we assess the effects of the rhizospheric Pseudomonas inoculant strain RWX31 on the root exudate profile of the duckweed Spirodela polyrrhiza, using gas chromatography/mass spectrometry. Compared to untreated plants, inoculation with RWX31 specifically induced the exudation of two sterols, stigmasterol and β-sitosterol. An authentic standard assay revealed that stigmasterol significantly promoted nitrogen removal and biofilm formation by the denitrifying bacterial strain RWX31, whereas β-sitosterol had no effect. Assays for denitrifying enzyme activity were conducted to show that stigmasterol stimulated nitrogen removal by targeting nitrite reductase in bacteria. Enhanced N removal from water by stigmasterol, and a synergistic stimulatory effect with RWX31, was observed in open duckweed cultivation systems. We suggest that this is linked to a modulation of community composition of nirS- and nirK-type denitrifying bacteria in the rhizosphere, with a higher abundance of Bosea, Rhizobium, and Brucella, and a lower abundance of Rubrivivax. Our findings provide important new insights into the interaction of duckweed with the rhizospheric bacterial strain RWX31 and their involvement in the aquatic N cycle and offer a new path toward more effective bio-formulations for the purification of N-polluted waters.
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Affiliation(s)
- Yufang Lu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Herbert J Kronzucker
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada; School of BioSciences, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Weiming Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
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16
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Sampath SJP, Rath SN, Kotikalapudi N, Venkatesan V. Beneficial effects of secretome derived from mesenchymal stem cells with stigmasterol to negate IL-1β-induced inflammation in-vitro using rat chondrocytes-OA management. Inflammopharmacology 2021; 29:1701-1717. [PMID: 34546477 DOI: 10.1007/s10787-021-00874-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/01/2021] [Indexed: 12/24/2022]
Abstract
Osteoarthritis (OA) is the most prevalent joint disease predominantly characterized by inflammation which drives cartilage destruction. Mesenchymal stem cells-condition medium (MSC-CM) or the secretome is enriched with bioactive factors and possesses anti-inflammatory and regenerative effects. The present study aimed at evaluating the effects of combining MSC-conditioned medium with stigmasterol compared with the individual treatments in alleviating interleukin-1 beta (IL-1β)-induced inflammation in rat chondrocytes. Stigmasterol is a phytosterol exhibiting anti-inflammatory effects. IL-1β (10 ng/ml) was used to induce inflammation and mimic OA in-vitro in primary rat articular chondrocytes. The IL-1β-stimulated chondrocytes were treated with MSC-CM, stigmasterol, and a combination of MSC-CM and stigmasterol for 24 h. Cell viability was measured using MTT assay. Protein expression of inducible nitric oxide synthase (iNOS), interleukin-6 (IL-6), collagen II (COL2A1) and matrix metalloproteinase (MMP)-13 were evaluated by immunofluorescence. Gene expression levels of MMP-3, MMP-13 and A Disintegrin-like and Metalloproteinases with Thrombospondin Motifs (ADAMTS)-5 were measured using qRT-PCR. NF-κB signaling pathway was studied using western blotting. A significant reduction in the expression of iNOS, IL-6, MMP-3, MMP-13 and ADAMTS-5, and a significant increase in COL2A1 expression was observed in the rat chondrocytes across all the treatment groups. However, the combination treatment of MSC-CM and stigmasterol remarkably reversed the IL-1β-induced pro-inflammatory/pro-catabolic responses to near normal levels comparable to the control group. The combination treatment (MSC-CM + stigmasterol) elicited a superior anti-inflammatory/anti-catabolic effect by inhibiting the IL-1β-induced NF-κB activation evidenced by the negligible phosphorylation of p65 and IκBα subunits, thereby emphasizing the benefit of the combination therapy over the individual treatments.
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Affiliation(s)
- Samuel Joshua Pragasam Sampath
- Stem Cell Research Laboratory, Department of Cell and Molecular Biology, National Institute of Nutrition, Indian Council of Medical Research, Tarnaka, Hyderabad, 500007, Telangana, India
| | - Subha Narayan Rath
- Regenerative Medicine and Stem Cells Laboratory, Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, 502285, Telangana, India
| | - Nagasuryaprasad Kotikalapudi
- Stem Cell Research Laboratory, Department of Cell and Molecular Biology, National Institute of Nutrition, Indian Council of Medical Research, Tarnaka, Hyderabad, 500007, Telangana, India
| | - Vijayalakshmi Venkatesan
- Stem Cell Research Laboratory, Department of Cell and Molecular Biology, National Institute of Nutrition, Indian Council of Medical Research, Tarnaka, Hyderabad, 500007, Telangana, India.
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Mousavi MM, Torbati M, Farshi P, Hosseini H, Aman Mohammadi M, Hosseini SM, Hosseinzadeh S. ----Evaluation of Design and Fabrication of Food-Grade Nanofibers from Chitosan-Gelatin for Nanoencapsulation of Stigmasterol Using the Electrospinning Method. Adv Pharm Bull 2021; 11:514-521. [PMID: 34513626 PMCID: PMC8421624 DOI: 10.34172/apb.2021.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/06/2020] [Accepted: 08/24/2020] [Indexed: 01/02/2023] Open
Abstract
Purpose: In this research, electrospinning method was employed to fabricate food-grade nanofibers (NFs) from chitosan-gelatin combination for stigmasterol encapsulation. The spinnability of mixed chitosan and gelatin solutions was investigated at different polymer ratios, and the physicochemical properties of the NFs were evaluated. Methods: The mixture solution of chitosan (1.5 % w/v) and gelatin (20 % w/v) in acetic acid indicated spinnability under the following conditions: the ratio of 25:75, voltage of 17 kV, and 15 cm capillary collector distance with a flow rate of 0.2 mL/min. Stigmasterol (0.04 % w/v) was incorporated into NFs of chitosan-gelatin at a respective ratio of 25:75. Results: Encapsulation efficiency (EE) of loaded stigmasterol was found to be 87 ± 5 %. The antioxidant ability of loaded stigmasterol was considerably higher than that observed for free stigmasterol. Scanning electron microscopy (SEM) results demonstrated the formation of the ultrathin fibers with no bead (with diameters of 217 ± 43 nm). The concentration of polymeric solution and viscosity had a notable effect on the electrospinning efficiency of the chitosan-gelatin-based NFs. The thermal stability of chitosan and gelatin fibers was more than that of native gelatin and chitosan. The in vitro stigmasterol release from these NFs followed a controlled-release pattern. The released phytosterol from chitosan formula was less than from those without chitosan formula (46 ± 3 % and 96 ± 4 % respectively). Conclusion: The obtained results suggested that gelatin had a high potential for enhancing the spinnability of chitosan under acidic conditions at optimized concentrations.
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Affiliation(s)
- Mir-Michael Mousavi
- (Department) National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Students' Research Committee, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammadali Torbati
- Department of Food Science and Technology, Faculty of Nutrition and Food Sciences, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parastou Farshi
- Food Science Institute, Kansas State University, Manhattan, KS, USA
| | - Hedayat Hosseini
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoud Aman Mohammadi
- (Department) National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Students' Research Committee, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyede Marzieh Hosseini
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Simzar Hosseinzadeh
- School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Karim N, Khan I, Abdelhalim A, Halim SA, Khan A, Al-Harrasi A. Stigmasterol can be new steroidal drug for neurological disorders: Evidence of the GABAergic mechanism via receptor modulation. Phytomedicine 2021; 90:153646. [PMID: 34280827 DOI: 10.1016/j.phymed.2021.153646] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Gamma-aminobutyric acid A (GABAA) receptors have been implicated in anxiety and epileptic disorders. HYPOTHESIS/PURPOSE This study aimed to investigate the effects of stigmasterol, a plant sterol (phytosterol) isolated from Artemisia indica Linn on neurological disorders. METHODS Stigmasterol was evaluated on various recombinant GABAA receptor subtypes expressed in Xenopus laevis oocytes and its anxiolytic and anticonvulsant potential was assessed using the elevated plus maze (EPM), light-dark box (LDB) test, and pentylenetetrazole- (PTZ-) induced seizure paradigms. Furthermore, computational modeling of α2β2γ2L, α4β3δ, and α4β3 subtypes was performed to gain insights into the GABAergic mechanism of stigmasterol. For the first time, a model of GABAδ subtype was generated. Stigmasterol was targeted to all the binding sites (neurotransmitters, positive and negative modulator binding sites) of GABAA α2β2γ2L, α4β3, and α4β3δ complexes by in silico docking. RESULTS Stigmasterol enhanced GABA-induced currents at ternary α2β2γ2L, α4β3δ, and binary α4β3 GABAAR subtypes. The potentiation of GABA-induced currents at extrasynaptic α4β3δ was significantly higher compared to the binary α4β3 subtype, indicating that the δ subunit is important for efficacy. Stigmasterol was found to be a potent positive modulator of the extrasynaptic α4β3δ subtype, which was also confirmed by computational analysis. The computational analysis reveals that stigmasterol preferentially binds at the transmembrane region shared by positive modulators or a binding site constituted by the M2-M3 region of α4 and M1-M2 of β3 at α4β3δ complex. In in vivo studies, Stigmasterol (0.5-3.0 mg/kg, i.p.) exerted significant anxiolytic and anticonvulsant effects in an identical manner of allopregnanolone, indicating the involvement of a GABAergic mechanism. CONCLUSION To our knowledge, this is the first study reporting the positive modulation of GABAA receptors, anxiolytic and anticonvulsant potential of stigmasterol. Thus, stigmasterol is considered to be a candidate steroidal drug for the treatment of neurological disorders due to its positive modulation of GABA receptors.
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Affiliation(s)
- Nasiara Karim
- Department of Pharmacy, University of Malakand, Chakdara, Dir (Lower), KPK, Pakistan.
| | - Imran Khan
- Department of Pharmacy, University of Swabi, KPK, Pakistan
| | - Abeer Abdelhalim
- Faculty of Science, Taibah University, Almadina Almonawara, Saudi Arabia
| | - Sobia Ahsan Halim
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Sultanate of Oman
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Sultanate of Oman.
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Sultanate of Oman.
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Wang Q, Liang YY, Li KW, Li Y, Niu FJ, Zhou SJ, Wei HC, Zhou CZ. Herba Siegesbeckiae: A review on its traditional uses, chemical constituents, pharmacological activities and clinical studies. J Ethnopharmacol 2021; 275:114117. [PMID: 33848612 DOI: 10.1016/j.jep.2021.114117] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/21/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Herba Siegesbeckiae, mainly includes Sigesbeckia orientalis L, Sigesbeckiae pubescens Makino and Sigesbeckiae glabrescens Makino. Herba Siegesbeckiae, also known as 'Xi-Xian Cao' (Chinese: ), has been regarded as an important traditional Chinese medicine since Tang dynasty. The dried aerial parts of Herba Siegesbeckiae are also being used as a herbal medicine in many countries such as Japan, Korea and Vietnam. In China, Herba Siegesbeckiae has been used for the treatment of rheumatic arthralgia with aching and weakness of loins and knees, as well as numbness of limbs. AIM OF THIS REVIEW The aim of this review was to provide critical analysis on the scientific evidence to support the traditional uses of Herba Siegesbeckiae. The information available on its in botanical characteristics, traditional uses, chemical constituents, pharmacological activities, clinical studies, toxicity and quality control was summarized to understand the current research and provided the leas for future study. MATERIALS AND METHODS The search terms "Herba Siegesbeckiae", "Sigesbeckia orientalis", "Sigesbeckia pubscens" and "Sigesbeckia glabrescens" were used to obtain the information from electronic databases such as Web of Science, China National Knowledge Infrastructure, PubMed, Google Scholar and SciFinder Scholar and other web search instruments (Springer, Yahoo search). The information provided in this review was based on peer-reviewed papers in English and Chinese. Besides, information was also collected from ancient documents. RESULT The studies showed that Herba Siegesbeckiae contains sesquiterpenoids, diterpenoids, flavonoids and organic acids, etc. Due to these constituents, it displayed numerous pharmacological activities, such as anti-inflammatory, antitumor, antiallergic, antioxidant, antithrombotic and antibacterial activities. In addition, it showed effects in protecting myocardial and cerebral ischemia injury. CONCLUSIONS According to its traditional uses, chemical constituents, pharmacological activities and clinic studies, Herba Siegesbeckiae is regarded as a promising medical plant with various chemical compounds and numerous pharmacological activities. However, fewer experimental studies were focused on toxicity and quantitative study of 3 species. It suggested that further in-depth study of toxicity and quality control were critical for future evaluation of drug efficacy and safety.
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Affiliation(s)
- Qi Wang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Yi-Yu Liang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Kun-Wei Li
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Ying Li
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Feng-Jv Niu
- Shandong Institute of Traditional Chinese Medicine, Ji'nan, 250014, China
| | - Sheng-Jun Zhou
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Hao-Cheng Wei
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Chang-Zheng Zhou
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China.
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20
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Jaffal SM, Al-Najjar BO, Abbas MA. Ononis spinosa alleviated capsaicin-induced mechanical allodynia in a rat model through transient receptor potential vanilloid 1 modulation. Korean J Pain 2021; 34:262-270. [PMID: 34193633 PMCID: PMC8255156 DOI: 10.3344/kjp.2021.34.3.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 11/29/2022] Open
Abstract
Background Transient receptor potential vanilloid 1 (TRPV1) is a non-selective cation channel implicated in pain sensation in response to heat, protons, and capsaicin (CAPS). It is well established that TRPV1 is involved in mechanical allodynia. This study investigates the effect of Ononis spinosa (Fabaceae) in CAPS-induced mechanical allodynia and its mechanism of action. Methods Mechanical allodynia was induced by the intraplantar (ipl) injection of 40 µg CAPS into the left hind paw of male Wistar rats. Animals received an ipl injection of 100 µg O. spinosa methanolic leaf extract or 2.5% diclofenac sodium 20 minutes before CAPS injection. Paw withdrawal threshold (PWT) was measured using von Frey filament 30, 90, and 150 minutes after CAPS injection. A molecular docking tool, AutoDock 4.2, was used to study the binding energies and intermolecular interactions between O. spinosa constituents and TRPV1 receptor. Results The ipsilateral ipl injection of O. spinosa before CAPS injection increased PWT in rats at all time points. O. spinosa decreased mechanical allodynia by 5.35-fold compared to a 3.59-fold decrease produced by diclofenac sodium. The ipsilateral pretreatment with TRPV1 antagonist (300 µg 4-[3-Chloro-2-pyridinyl]-N-[4-[1,1-dimethylethyl] phenyl]-1-piperazinecarboxamide [BCTC]) as well as the β2-adrenoreceptor antagonist (150 µg butoxamine) attenuated the action of O. spinosa. Depending on molecular docking results, the activity of the extract could be attributed to the bindings of campesterol, stigmasterol, and ononin compounds to TRPV1. Conclusions O. spinosa alleviated CAPS-induced mechanical allodynia through 2 mechanisms the direct modulation of TRPV1 and the involvement of β2 adrenoreceptor signaling.
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Affiliation(s)
- Sahar Majdi Jaffal
- Department of Biological Sciences, Faculty of Science, The University of Jordan, Amman, Jordan
| | - Belal Omar Al-Najjar
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan.,Pharmacological and Diagnostic Research Center, Al-Ahliyya Amman University, Amman, Jordan
| | - Manal Ahmad Abbas
- Pharmacological and Diagnostic Research Center, Al-Ahliyya Amman University, Amman, Jordan.,Department of Medical Laboratory Sciences, Faculty of Allied Medical Sciences, Al-Ahliyya Amman University, Amman, Jordan
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21
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Dwivedi PSR, Rasal VP, Kotharkar E, Nare S, Khanal P. Gene set enrichment analysis of PPAR-γ regulators from Murraya odorata Blanco. J Diabetes Metab Disord 2021; 20:369-375. [PMID: 34178844 PMCID: PMC8212318 DOI: 10.1007/s40200-021-00754-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/24/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Peroxisome proliferator-activated receptor gamma (PPAR-γ) is reported to regulate insulin sensitivity and progression of Type 2 diabetes mellitus (T2DM). Hence the present study is aimed to identify PPAR-γ regulators from Murraya odorata Blanco and predict their role to manage T2DM. METHODS Multiple in-silico tools and databases like SwissTargetPrediction, ADVERPred, PubChem, and MolSoft, were used to retrieve the information related to bioactives, targets, druglikeness character, and probable side effects as applicable. Similarly, the Kyoto Encyclopedia of Genes and Genomes (KEGG) database was used to identify the regulated pathways. Further, the bioactives-protein-pathways network interaction was constructed using Cytoscape. Finally, molecular docking was performed using Autodock4. RESULTS Twenty-five bioactives were shortlisted in which six were predicted as PPAR-γ modulators. Among them, stigmasterol was predicted to possess the best binding affinity towards PPAR-γ and possessed no side effects. Similarly, n-hexadecanoic acid was predicted to modulate the highest number of proteins, and protein CD14 was targeted by the highest number of bioactives. Further, the PI3K-Akt pathway was predicted as the maximum modulated genes. CONCLUSIONS The anti-diabetic property of the Murraya odorata Blanco of fruit pulp may be due to the presence of n-hexadecanoic acid and stigmasterol; may also involve in the regulation of the PI3K-Akt pathway which needs further investigated by in-vitro and in-vivo protocols.
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Affiliation(s)
- Prarambh SR Dwivedi
- Department of Pharmacology and Toxicology, KLE College of Pharmacy Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi, 590010 India
| | - V. P. Rasal
- Department of Pharmacology and Toxicology, KLE College of Pharmacy Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi, 590010 India
| | - Ekta Kotharkar
- Department of Pharmacology and Toxicology, KLE College of Pharmacy Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi, 590010 India
| | - Shailaja Nare
- Department of Pharmacology and Toxicology, KLE College of Pharmacy Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi, 590010 India
| | - Pukar Khanal
- Department of Pharmacology and Toxicology, KLE College of Pharmacy Belagavi, KLE Academy of Higher Education and Research (KAHER), Belagavi, 590010 India
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22
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Haque MN, Hannan MA, Dash R, Choi SM, Moon IS. The potential LXRβ agonist stigmasterol protects against hypoxia/reoxygenation injury by modulating mitophagy in primary hippocampal neurons. Phytomedicine 2021; 81:153415. [PMID: 33285471 DOI: 10.1016/j.phymed.2020.153415] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 10/29/2020] [Accepted: 11/04/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Neuronal excitotoxicity induces a plethora of downstream signaling pathways, resulting in the calcium overload-induced excitotoxic cell death, a well-known phenomenon in cerebrovascular and neurodegenerative disorders. The naturally occurring phytosterol, stigmasterol (ST) is known for its potential role in cholesterol homeostasis and neuronal development. However, the ability of ST to protect against the induced excitotoxicity in hippocampal neurons has not been investigated yet. PURPOSE The present study aimed to investigate whether ST could protect against hypoxia/reoxygenation (H/R)-induced excitotoxicity in hippocampal neurons. METHODS After H/R, neurons were initially subjected to trypan blue exclusion assay for the assessment of cell viability. Live staining using fluorescence dyes namely JC-1 (5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolyl-carbocyanine iodide), DCFDA (2',7'-dichlorofluorescein diacetate) and FM1-43 (N-(3-triethylammoniumpropyl)-4-(4-(dibutylamino)styryl) were used to measure MMP, ROS and synaptic vesicle pool size. Immunostaining was performed to analyze the expression levels of vesicular glutamate transporter 1 (VGLUT1), N-methyl-D-acetate receptor subunit 2B (GluN2B), LC3BII, p62, and PTEN induced protein kinase 1 (PINK1) in neuron after H/R. Western blotting was carried out to measure the protein expression of GluN2B. The molecular dynamics simulation was employed to elucidate the LXRβ agonistic conformation of ST. RESULT Pre-incubation of neuronal cultures with ST (20 μM) protected against excitotoxicity, and attenuated reactive oxygen species (ROS) generation, double-stranded DNA break, and mitochondrial membrane potential (MMP) loss. ST treatment also resulted in the downregulation of the expressions of VGLUT1 and GluN2B and the reduction of the size of recyclable synaptic vesicle (SV) pool. Like LXRβ agonist GW3695, ST suppressed the expression of GluN2B. Furthermore, ST induced mitophagy through upregulating the expressions of LC3BII, p62, and PINK1. The molecular simulation study showed that ST interacted with the ligand binding domain of liver X receptor β (LXRβ), a known binding receptor of ST, through multiple hydrogen bonding. CONCLUSION Collectively, these findings revealed that ST exhibited a promising neuroprotective effect by regulating both pre- and post-synaptic events following H/R, particularly, attenuation of GluN2B-mediated excitotoxicity and oxidative stress, and induction of mitophagy, and suggested that ST might be a therapeutic promise against ischemic stroke and its associated neurological disorders.
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Affiliation(s)
- Md Nazmul Haque
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea; Department of Fisheries Biology and Genetics, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
| | - Md Abdul Hannan
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea; Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Raju Dash
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Sung Min Choi
- Department of Pediatrics, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Il Soo Moon
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea.
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23
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Sharma A, Rana S, Rather GA, Misra P, Dhar MK, Lattoo SK. Characterization and overexpression of sterol Δ 22-desaturase, a key enzyme modulates the biosyntheses of stigmasterol and withanolides in Withania somnifera (L.) Dunal. Plant Sci 2020; 301:110642. [PMID: 33218619 DOI: 10.1016/j.plantsci.2020.110642] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/10/2020] [Accepted: 08/22/2020] [Indexed: 05/20/2023]
Abstract
Withanolides constitute an extensive and vital class of metabolites displaying wide array of structural and therapeutic properties with unique side-chain modifications. These show diversified scaffolds and are promising pharmaceutical molecules with well documented anti-inflammatory and anti-cancer properties. Sterols are dynamic class of compounds and essential molecules having structural and functional significance. These contribute to the synthesis of withanolides by providing structural precursors. In this context, we have characterized sterol Δ22-desaturase from Withania somnifera and also functionally validating it by confirming its desaturase nature in conjunction with quantitative real-time expression profiling and metabolite evaluation. Further, transgenic hairy roots of W. somnifera displayed a higher accumulation of stigmasterol and withanolides. The increase in chemical constituents was concomitant with an increased gene copy number predicted via Southern blotting. Additionally, transgenic lines of tobacco over-expressing WsCYP710A11 displayed a substantial increase in its expression, corroborating well with enhanced stigmasterol content. Characterization of CYP710A11 from W. somnifera and its homologous transgenic expression has demonstrated its role in the regulation of withanolides biosynthesis. It also exhibited a differential transcriptional profile in response to exogenous elicitations. These empirical findings suggest the crucial role of CYP710A11 in stigmasterol biosynthesis. This in turn has implications for the overproduction of withanolides via pathway channelling.
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Affiliation(s)
- Arti Sharma
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, 180001, India.
| | - Satiander Rana
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, 180001, India.
| | - Gulzar A Rather
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, 180001, India.
| | - Prashant Misra
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, 180001, India.
| | - Manoj K Dhar
- School of Biotechnology, Department of Life Sciences, University of Jammu, Jammu Tawi, 180006, India.
| | - Surrinder K Lattoo
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, 180001, India.
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24
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Zmysłowski A, Sitkowski J, Bus K, Ofiara K, Szterk A. Synthesis and search for 3β,3'β-disteryl ethers after high-temperature treatment of sterol-rich samples. Food Chem 2020; 329:127132. [PMID: 32504917 DOI: 10.1016/j.foodchem.2020.127132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 10/24/2022]
Abstract
It has been proven that at increased temperature, sterols can undergo various chemical reactions e.g., oxidation, dehydrogenation, dehydration and polymerisation. The objectives of this study are to prove the existence of dimers and to quantitatively analyse the dimers (3β,3'β-disteryl ethers). Sterol-rich samples were heated at 180 °C, 200 °C and 220 °C for 1 to 5 h. Quantitative analyses of the 3β,3'β-disteryl ethers were conducted using liquid extraction, solid-phase extraction and gas chromatography coupled with mass spectrometry. Additionally, for the analyses, suitable standards were synthetized from native sterols. To identify the mechanism of 3β,3'β-disteryl ether formation at high temperatures, an attempt was made to use the proposed synthesis method. Additionally, due to the association of sterols and sterol derivatives with atherosclerosis, preliminary studies with synthetized 3β,3'β-disteryl ethers on endothelial cells were conducted.
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Affiliation(s)
- Adam Zmysłowski
- National Medicines Institute, 30/34 Chełmska, 00-725 Warsaw, Poland.
| | - Jerzy Sitkowski
- National Medicines Institute, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Katarzyna Bus
- National Medicines Institute, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Karol Ofiara
- National Medicines Institute, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Arkadiusz Szterk
- National Medicines Institute, 30/34 Chełmska, 00-725 Warsaw, Poland
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25
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Liao H, Zhu D, Bai M, Chen H, Yan S, Yu J, Zhu H, Zheng W, Fan G. Stigmasterol sensitizes endometrial cancer cells to chemotherapy by repressing Nrf2 signal pathway. Cancer Cell Int 2020; 20:480. [PMID: 33041661 PMCID: PMC7541302 DOI: 10.1186/s12935-020-01470-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/31/2020] [Indexed: 02/07/2023] Open
Abstract
Background Chemoresistance reduces the 5-year survival rate of endometrial cancer patient, which is the current major obstacle for cancer therapy. Increasing evidence state that Nrf2 contributes to chemoresistance in several kinds of cancer. However, its role in endometrial cancer cells remains unclarified. Methods Immunohistochemistry staining was used to detect the expression of Nrf2 in normal patient and endometrial cancer patient. Stable transfection Ishikawa cell line with high level of Nrf2 was established to evaluate its role in chemoresistance. Dot blot assays were used to assess global hydroxymethylation level after stigmasterol treatment. Cellular growth profile was detected by CCK8 assay. Western blot was used to evaluate the changes of the target molecules after various treatments. Results Nrf2 is overexpressed in endometrial cancer tissues compared with the normal endometrium. Overexpression of Nrf2 resulted in decrease sensitivity to cisplatin. In addition, stigmasterol has been identified as a novel Nrf2 inhibitor. It enhanced the sensitivity of endometrial cancer cells to cisplatin, and the underlying mechanism is that stigmasterol declines the Nrf2 protein level. Conclusions Our findings identified stigmasterol as a new potential inhibitor of Nrf2 and highlight a critical role of stigmasterol in overcoming chemoresistance in endometrial cancer therapy.
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Affiliation(s)
- Hong Liao
- Department of Clinical Laboratory Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, 200040 China.,The Graduate School, Tongji University School of Medicine, Shanghai, 200040 China
| | - Dan Zhu
- College of Pharmacy, Guangxi Medical University, Nanning, 530021 China
| | - Mingzhu Bai
- Department of Gynecology and Obstetrics, Shanghai General Hospital, Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080 China
| | - Huifen Chen
- Department of Clinical Laboratory Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, 200040 China
| | - Shihuan Yan
- College of Pharmacy, Guangxi Medical University, Nanning, 530021 China
| | - Jing Yu
- Department of Pathology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, 200040 China
| | - Huiting Zhu
- Department of Pathology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, 200040 China
| | - Wenxin Zheng
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390 USA.,Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX 75390 USA
| | - Guorong Fan
- The Graduate School, Tongji University School of Medicine, Shanghai, 200040 China.,Department of Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080 China
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Gupta A, Narkowicz CK, Al-Aubaidy HA, Jelinek HF, Nichols DS, Burgess JR, Jacobson GA. Phytosterol supplements do not inhibit dipeptidyl peptidase-4. Diabetes Metab Syndr 2020; 14:1475-1478. [PMID: 32771921 DOI: 10.1016/j.dsx.2020.07.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 07/12/2020] [Accepted: 07/13/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND AIMS Several commercially available phytosterol supplements are promoted for their cholesterol-lowering effects. However, limited information is available about their potential anti-hyperglycaemic effects. This study aimed to evaluate the dipeptidyl peptidase-4 (DPP-4) inhibitory effects of phytosterol supplements in silico and in vitro to determine their potential for anti-diabetic activity. METHODS Docking studies were carried out in silico to evaluate the potential for interactions between three major phytosterol compounds (stigmasterol, β-sitosterol, campesterol) and the DPP-4 enzyme, the enzyme that is inhibited by the anti-diabetic gliptins. Gas chromatography-tandem mass spectrometry (GC-MS/MS) was used to analyse three different supplements for phytosterol content. DPP-4 inhibitory activity was tested in vitro for these phytosterol supplements and two major phytosterol standards. RESULTS In silico calculations predicted free binding energies for DPP-4 with the phytosterols to be: stigmasterol -8.78 kcal/mol; β-sitosterol -8.70 kcal/mol; campesterol -8.40 kcal/mol. These binding energies indicated a potential for significant DPP-4 inhibition. However, these results were not supported by the in vitro studies. Stigmasterol and β-sitosterol had an IC50 > 50 mg/ml (maximum tested concentration) and the Thompson's Cholesterol Manager® and Mega Strength Beta Sitosterol® supplements gave an IC50 > 100 mg/ml (maximum tested concentration). Blackmores Cholesterol Health® gave an IC50 value of 40 mg/ml which was attributed to β-carotene content. CONCLUSIONS Phytosterol supplements do not appear to offer any anti-diabetic activity potential via pathways that involve the inhibition of DPP-4.
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Affiliation(s)
- Ankit Gupta
- School of Medicine, University of Tasmania, Hobart, TAS, 7000, Australia.
| | - Christian K Narkowicz
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS, 7005, Australia
| | - Hayder A Al-Aubaidy
- School of Life Sciences, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Herbert F Jelinek
- Department of Biomedical Engineering and Health Engineering Innovation Center, Khalifa University, Abu Dhabi, United Arab Emirates
| | - David S Nichols
- Central Science Laboratory, University of Tasmania, Hobart, TAS, 7005, Australia
| | - John R Burgess
- School of Medicine, University of Tasmania, Hobart, TAS, 7000, Australia; Department of Diabetes & Endocrinology, Royal Hobart Hospital, Hobart, TAS, 7000, Australia
| | - Glenn A Jacobson
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS, 7005, Australia
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27
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Lee WS, Chew KS, Ng RT, Kasmi KE, Sokol RJ. Intestinal failure-associated liver disease (IFALD): insights into pathogenesis and advances in management. Hepatol Int 2020; 14:305-316. [PMID: 32356227 DOI: 10.1007/s12072-020-10048-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 04/16/2020] [Indexed: 12/12/2022]
Abstract
Premature infants and children with intestinal failure (IF) or short bowel syndrome are susceptible to intestinal failure-associated liver disease (IFALD, previously referred to as parenteral nutrition-associated liver disease, or PNALD). IFALD in children is characterized by progressive cholestasis and biliary fibrosis, and steatohepatitis in adults, and is seen in individuals dependent upon prolonged administration of PN. Many factors have been proposed as contributing to the pathogenesis of IFALD. In recent years, the focus has been on the potential synergistic roles of the intestinal microbiome, increased intestinal permeability, activation of hepatic innate immune pathways, and the use of intravenous soybean-oil-based intravenous lipid emulsions (SO-ILE). In vitro and in vivo studies have identified stigmasterol, a component of the plant sterols present in SO-ILE, as playing an important role. Although various strategies have been adopted to prevent or reverse IFALD, most suffer from a lack of strong evidence supported by well-designed, prospective clinical trials with clearly defined endpoints. Reduction in the amount of SO-ILEs or replacement with non-SO-ILEs has been shown to reverse IFALD although safety and long-term effectiveness have not been studied. Medical and surgical modalities to increase intestinal adaptation, advance enteral feedings, and prevent central line bloodstream infections are also important preventative strategies. There is a continued need to conduct high-quality, prospective trials with clearly define outcome measures to ascertain the potential benefits of these strategies.
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Affiliation(s)
- Way S Lee
- Department of Paediatrics, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
- University Malaya Paediatrics and Child Health Research Group, University Malaya, Kuala Lumpur, Malaysia
| | - Kee S Chew
- Department of Paediatrics, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
| | - Ruey T Ng
- Department of Paediatrics, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
| | - Karim El Kasmi
- Department of Immunology and Respiratory, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorferstr. 65, 88395, Biberach, Germany
| | - Ronald J Sokol
- Section of Pediatric Gastroenterology, Hepatology and Nutrition and the Digestive Health Institute, Pediatric Liver Center, Colorado Clinical and Translational Sciences Institute, University of Colorado School of Medicine and Children's Hospital Colorado, 13123 E. 16th Ave., Box B290, Aurora, CO, 80045, USA.
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28
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Pandey P, Bajpai P, Siddiqui MH, Sayyed U, Tiwari R, Shekh R, Mishra K, Kapoor VK. Elucidation of the Chemopreventive Role of Stigmasterol Against Jab1 in Gall Bladder Carcinoma. Endocr Metab Immune Disord Drug Targets 2020; 19:826-837. [PMID: 30727937 DOI: 10.2174/1871530319666190206124120] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/06/2018] [Accepted: 01/19/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Plant sterols have proven a potent anti-proliferative and apoptosis inducing agent against several carcinomas including breast and prostate cancers. Jab1 has been reported to be involved in the progression of numerous carcinomas. However, antiproliferative effects of sterols against Jab1 in gall bladder cancer have not been explored yet. OBJECTIVE In the current study, we elucidated the mechanism of action of stigmasterol regarding apoptosis induction mediated via downregulation of Jab1 protein in human gall bladder cancer cells. METHODS In our study, we performed MTT and Trypan blue assay to assess the effect of stigmasterol on cell proliferation. In addition, RT-PCR and western blotting were performed to identify the effect of stigmasterol on Jab1 and p27 expression in human gall bladder cancer cells. We further performed cell cycle, Caspase-3, Hoechst and FITC-Annexin V analysis, to confirm the apoptosis induction in stigmasterol treated human gall bladder cancer cells. RESULTS Our results clearly indicated that stigmasterol has up-regulated the p27 expression and down-regulated Jab1 gene. These modulations of genes might occur via mitochondrial apoptosis signaling pathway. Caspase-3 gets activated with the apoptotic induction. Increase in apoptotic cells and DNA were confirmed through annexin V staining, Hoechst staining, and cell cycle analysis. CONCLUSION Thus, these results strongly suggest that stigmasterol has the potential to be considered as an anticancerous therapeutic agent against Jab1 in gall bladder cancer.
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Affiliation(s)
- Pratibha Pandey
- Department of Bioengineering, Integral University, Lucknow, India.,Department of Biotechnology, Noida Institute of Engineering & Technology, Greater Noida, India
| | - Preeti Bajpai
- Department of Biosciences, Integral University, Lucknow, India
| | | | - Uzma Sayyed
- Department of Biosciences, Integral University, Lucknow, India
| | - Rohit Tiwari
- Department of Biosciences, Integral University, Lucknow, India
| | - Rafia Shekh
- Department of Biosciences, Integral University, Lucknow, India
| | - Kumudesh Mishra
- Department of Surgical Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, India
| | - V K Kapoor
- Department of Surgical Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, India
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29
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Almeida CAS, Baggio SR, Mariutti LRB, Bragagnolo N. One-step rapid extraction of phytosterols from vegetable oils. Food Res Int 2019; 130:108891. [PMID: 32156349 DOI: 10.1016/j.foodres.2019.108891] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 12/02/2019] [Accepted: 12/12/2019] [Indexed: 10/25/2022]
Abstract
The conditions for the extraction of phytosterols (campesterol, stigmasterol and β-sitosterol) from vegetal oils were optimized by means of response surface methodology (RSM). A 24 central composite rotatable design (CCRD) was used to investigate the effects of four independent variables: sample weight (g), saponification temperature (°C), saponification time (h) and number of extractions (n). The CCRD was carried out in 27 trials, including eight axial and three central points; and the response variables were the contents of campesterol, stigmasterol, β-sitosterol and total phytosterols. The optimized conditions established by the RSM were 0.3 g of sample, saponification for 3 h at 50 °C and 4 extractions with n-hexane. Satisfactory values for linearity, recovery, repeatability, accuracy, precision, limits of detection (2.0-2.3 mg/100 g) and quantification (6.5-7.7 mg/100 g) were achieved. The optimized method was also validated by comparison with the official AOCS method, and the contents of stigmasterol and β-sitosterol did not show significant differences (p > 0.05) when determined by both methods. However, low values (p < 0.05) for campesterol were found when the samples were analyzed by the AOCS method. The method optimized and validated in the present work is easy to carry out, fast and accurate. The method was successfully applied to sunflower, canola, corn, soybean and olive oils, and the lowest contents of total phytosterols were found in olive oil while and the highest amounts, in corn oil.
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Affiliation(s)
- Claudia Aparecida Silva Almeida
- Departamento de Ciência de Alimentos, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil; Unidade Laboratorial de Referência de Química de Alimentos, Centro de Pesquisa de Ciência e Qualidade dos Alimentos, Instituto de Tecnologia de Alimentos, Campinas, São Paulo, Brazil
| | - Sueli Regina Baggio
- Unidade Laboratorial de Referência de Química de Alimentos, Centro de Pesquisa de Ciência e Qualidade dos Alimentos, Instituto de Tecnologia de Alimentos, Campinas, São Paulo, Brazil
| | - Lilian Regina Barros Mariutti
- Departamento de Alimentos e Nutrição, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Neura Bragagnolo
- Departamento de Ciência de Alimentos, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.
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Tantratian S, Sae-Ngow A, Pradistsuwan C, Prakitchaiwattana C, Pukahuta C. Survival of Kluyveromyces marxianus with stigmasterol as subjected to freezing stress. J Biosci Bioeng 2019; 128:39-43. [PMID: 30718147 DOI: 10.1016/j.jbiosc.2018.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 11/09/2018] [Accepted: 12/13/2018] [Indexed: 11/16/2022]
Abstract
Kluyveromyces marxianus is an aerobic yeast and is interested to be applied in many industries. This research was aimed to study the effect of the sterol alternative to ergosterol on the freezing stress of K. marxianus UBU1-11, a thermotolerant yeast. The 0-9 mgL-1 stigmasterol were added to the YM broth and applied for culturing. The growth of all conditions were not interfered by the addition of stigmasterol. The intra-cellular sterol content was detected in the medium with 5 mgL-1 stigmasterol and higher, where the maximum content was 0.32 mg g-1 cell dry weight. After frozen and thawed, the cultures contained stigmasterol had significantly higher viability than those without. It was found that the amount of stigmasterol contained in cells did not affect the number of survival. The stigmasterol provided a significant protection to the yeast cell when subjected to slow freezing. It also increased the survival rate of the culture subjected to subzero temperature storage.
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Affiliation(s)
- Sumate Tantratian
- Department of Food Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Apinya Sae-Ngow
- Department of Food Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chidphong Pradistsuwan
- Department of Food Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | | | - Charida Pukahuta
- Department of Biological Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
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Yang GL, Fang Y, Xu YL, Tan L, Li Q, Liu Y, Lai F, Jin YL, Du AP, He KZ, Ma XR, Zhao H. Frond transformation system mediated by Agrobacterium tumefaciens for Lemna minor. Plant Mol Biol 2018; 98:319-331. [PMID: 30298427 DOI: 10.1007/s11103-018-0778-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 09/07/2018] [Indexed: 06/08/2023]
Abstract
The Lemnaceae, known as duckweed, the smallest flowering aquatic plant, shows promise as a plant bioreactor. For applying this potential plant bioreactor, establishing a stable and efficient genetic transformation system is necessary. The currently favored callus-based method for duckweed transformation is time consuming and genotype limited, as it requires callus culture and regeneration, which is inapplicable to many elite duckweed strains suitable for bioreactor exploitation. In this study, we attempted to establish a simple frond transformation system mediated by Agrobacterium tumefaciens for Lemna minor, one of the most widespread duckweed species in the world. To evaluate the feasibility of the new transformation system, the gene CYP710A11 was overexpressed to improve the yield of stigmasterol, which has multiple medicinal purposes. Three L. minor strains, ZH0055, D0158 and M0165, were transformed by both a conventional callus transformation system (CTS) and the simple frond transformation system (FTS). GUS staining, PCR, quantitative PCR and stigmasterol content detection showed that FTS can produce stable transgenic lines as well as CTS. Moreover, compared to CTS, FTS can avoid the genotype constraints of callus induction, thus saving at least half of the required processing time (CTS took 8-9 months while FTS took approximately 3 months in this study). Therefore, this transformation system is feasible in producing stable transgenic lines for a wide range of L. minor genotypes.
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Affiliation(s)
- Gui-Li Yang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Fang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
| | - Ya-Liang Xu
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Tan
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
| | - Qi Li
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Liu
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fan Lai
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yan-Ling Jin
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
| | - An-Ping Du
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
| | - Kai-Ze He
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China
| | - Xin-Rong Ma
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China.
| | - Hai Zhao
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
- Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, 610041, China.
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Feng S, Dai Z, Liu AB, Huang J, Narsipur N, Guo G, Kong B, Reuhl K, Lu W, Luo Z, Yang CS. Intake of stigmasterol and β-sitosterol alters lipid metabolism and alleviates NAFLD in mice fed a high-fat western-style diet. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:1274-1284. [PMID: 30305244 DOI: 10.1016/j.bbalip.2018.08.004] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 06/28/2018] [Accepted: 08/04/2018] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To investigate and compare the effects of two common dietary phytosterols, stigmasterol and β-sitosterol, in altering lipid metabolism and attenuating nonalcoholic fatty liver disease (NAFLD). METHODS Stigmasterol and β-sitosterol were administered to mice at 0.4% in a high-fat western-style diet (HFWD) for 17 weeks. RESULTS Stigmasterol and β-sitosterol significantly ameliorated HFWD-induced fatty liver and metabolic abnormalities, including elevated levels of hepatic total lipids, triacylglycerols, cholesterol and liver histopathology. Both phytosterols decreased the levels of intestinal bile acids, accompanied by markedly increased fecal lipid levels. In addition, they altered the expression of genes involved in lipid metabolism. β-Sitosterol was less effective in affecting most of these parameters. Lipidomic analysis of liver and serum samples showed that stigmasterol prevented the HFWD-induced elevation of some di- and triacylglycerol species and lowering of some phospholipid species. Stigmasterol also decreased serum levels of ceramides. CONCLUSION Stigmasterol and β-sitosterol, at a dose corresponding to that suggested for humans by the FDA for lowering cholesterol levels, are shown to alleviate HFWD-induced NAFLD. Stigmasterol was more effective than β-sitosterol, possibly because of its suppression of hepatic lipogenic gene expression and modulation of circulating ceramide levels.
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Affiliation(s)
- Simin Feng
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China; Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Zhuqing Dai
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Anna B Liu
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Jinbao Huang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; State Key Laboratory of Tea Plant Biology and Utilization School of Tea & Food Science, Anhui Agricultural University, Hefei, Anhui, People's Republic of China
| | - Nihal Narsipur
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Grace Guo
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Bo Kong
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Kenneth Reuhl
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Wenyun Lu
- Department of Chemistry & Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA
| | - Zisheng Luo
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, People's Republic of China.
| | - Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
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Agatonovic-Kustrin S, Morton DW. HPTLC - Bioautographic methods for selective detection of the antioxidant and α-amylase inhibitory activity in plant extracts. MethodsX 2018; 5:797-802. [PMID: 30101083 PMCID: PMC6082773 DOI: 10.1016/j.mex.2018.07.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 07/18/2018] [Indexed: 11/29/2022] Open
Abstract
A high-performance thin-layer chromatography (HPTLC) method was developed for quantification of α-amylase inhibitory activity and stigmasterol content in ant plant extracts. An improved HPTLC method for the determination of total free radical scavenging activity in samples using DPPH• is also reported. For quantification of α-amylase inhibitory activity, the developed HPTLC plate is dipped into an α-amylase solution, and the bioautogram is then incubated at 25 °C for 30 min under humid conditions. For visualization of enzyme inhibitory activity, the starch test with an iodine indicator solution is used. The blue zone observed comes from the starch-iodine complex formed from starch that was not hydrolyzed by the amylase due to enzyme inhibition by the compound(s) present in the sample. The area of the blue zones was used to compare and quantify relative α-amylase inhibitory activity in different extracts. Location of the blue zones (hRF) on the plate was used to detect compounds that are responsible for the α-amylase inhibitory activity. Relative α-amylase activity was not related to the antioxidant activity, but was highly correlated with the stigmasterol content in the sample extracts (R = 0.95). Therefore, plant sterols present in the extracts might be responsible for α-amylase inhibitory activities in the extracts. The developed method for quantification of α-amylase inhibitory activity provides an efficient and effective tool that can be used to screen, detect and quantify α-amylase inhibitory activity in plant extracts. The proposed protocol is easy to run, involves minimal sample preparation, with multiple samples able to be analyzed in parallel on the same chromatographic plate, in a short time. There were significant differences in α-amylase inhibitory activity, stigmasterol content, and total free radical scavenging activity between methanol, ethanol, dichloromethane, and ethyl acetate ant plant extracts.
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Affiliation(s)
- Snezana Agatonovic-Kustrin
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500, Selangor Darul Ehsan, Malaysia
| | - David W Morton
- School of Pharmacy and Applied Science, La Trobe Institute of Molecular Sciences, La Trobe University, Edwards Rd, Bendigo, 3550, Australia
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Haque MN, Moon IS. Stigmasterol upregulates immediate early genes and promotes neuronal cytoarchitecture in primary hippocampal neurons as revealed by transcriptome analysis. Phytomedicine 2018; 46:164-175. [PMID: 30097115 DOI: 10.1016/j.phymed.2018.04.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 02/21/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The hippocampus is a vulnerable brain region that is implicated in learning and memory impairment by two pathophysiological features, that is, neurite regression and synaptic dysfunction, and stigmasterol (ST), a cholesterol-equivalent phytosterol, is known to facilitate neuromodulatory effects. PURPOSE To investigate the neuromodulatory effects of ST on the development of central nervous system neurons and the molecular bases of these effects in primary hippocampal neurons. METHODS Rat embryonic (E18-19) brain neurons were cultured in the absence or presence of ST (75 µM). Neuritogenic activities of ST were evident by increases in various morphometric parameters. To identify underlying affected genes, total RNA was isolated on day in vitro 12 (DIV 12) and mRNA high throughput sequencing (mRNA-Seq) was performed. Affected key genes for neuronal development were identified using bioinformatics tools and their upregulations were confirmed by immunocytochemistry. RESULTS Among the differentially expressed 17,337 RefSeq genes, 445 genes (up/down 293/157) passed the p-value < 0.05 criterion, 52 genes (up/down; 37/13) had a p-value < 0.05 and a false discovery rate (FDR) q-value of < 0.2, and 24 genes (up/down; 20/4) passed the more stringent criterion of both p < 0.05 and q < 0.05. After applying a stringent FDR q-value cutoff of < 0.2, it was found ST induced many immediate early genes (IEGs), and that a major proportion of upregulated genes were related to central nervous system (CNS) development (neurite outgrowth or synaptic transmission). In a Venn diagram for CNS development Gene Ontologies (GOs) (i.e., axon development, dendrite development, modulation of synaptic transmission), Reln emerged as a central player in these processes, and highly interconnected 'hub' genes, including Dcx, Egr1, Ntrk2, and Slc24a2, were revealed by gene co-expression networks. Finally, transcriptomic data was confirmed by immunocytochemistry of primary hippocampal neurons. CONCLUSION The study indicates that ST upregulates genes for neuritogenesis and synaptogenesis, and suggests ST be viewed as a potential resource for improving brain functions.
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Affiliation(s)
- Md Nazmul Haque
- Department of Anatomy, Dongguk University Graduate School of Medicine, Gyeongju 38066, Republic of Korea
| | - Il Soo Moon
- Department of Anatomy, Dongguk University Graduate School of Medicine, Gyeongju 38066, Republic of Korea.
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Yadav M, Parle M, Jindal DK, Dhingra S. Protective effects of stigmasterol against ketamine-induced psychotic symptoms: Possible behavioral, biochemical and histopathological changes in mice. Pharmacol Rep 2018; 70:591-599. [PMID: 29679883 DOI: 10.1016/j.pharep.2018.01.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 11/30/2017] [Accepted: 01/09/2018] [Indexed: 01/18/2023]
Abstract
BACKGROUND Stigmasterol, a naturally occurring phytoestrogen has been reported to possess many pharmacological activities. The aim of the present study was to screen the effect of stigmasterol against ketamine-induced mice model of psychosis. METHODS The behavioural studies included an assessment of locomotor activity, stereotypic behaviours, immobility duration, step down latency and effects on catalepsy. Biochemical estimations involved the estimations of GABA, dopamine, GSH, MDA, TNF-α, total protein content and AChE activity. Histopathological changes and effect on androgenic parameters were also evaluated. RESULTS Stigmasterol treated animals showed significant decrease in locomotor activity, stereotypic behaviours, immobility duration and increased step down latency. Biochemical estimations revealed increased GABA, GSH levels and decreased dopamine, MDA, TNF-α levels and AChE activity. These findings were confirmed by histopathological changes in the cortex part of the brain. Further, stigmasterol was not found to cause catalepsy and any adverse effect on the reproductive system. CONCLUSION This study concluded that stigmasterol could ameliorate ketamine-induced behavioral, biochemical and histopathological alterations in mice showing its potential effects in the management of psychotic symptoms.
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Affiliation(s)
- Monu Yadav
- Faculty of Medical Sciences, Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, India
| | - Milind Parle
- Faculty of Medical Sciences, Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, India.
| | - Deepak Kumar Jindal
- Faculty of Medical Sciences, Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, India
| | - Sameer Dhingra
- Faculty of Medical Sciences, School of Pharmacy, The University of the West Indies, St. Augustine, Trinidad and Tobago
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Yenn TW, Arslan Khan M, Amiera Syuhada N, Chean Ring L, Ibrahim D, Tan WN. Stigmasterol: An adjuvant for beta lactam antibiotics against beta-lactamase positive clinical isolates. Steroids 2017; 128:68-71. [PMID: 29104098 DOI: 10.1016/j.steroids.2017.10.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/26/2017] [Accepted: 10/30/2017] [Indexed: 10/18/2022]
Abstract
The emergence of beta lactamase producing bacterial strains eliminated the use of beta lactam antibiotics as chemotherapeutic alternative. Beta lactam antibiotics can be coupled with non-antibiotic adjuvants to combat these multidrug resistant strains. We study the synergistic antibiotic effect of stigmasterol as adjuvant of ampicillin against clinical isolates. Ampicillin was used in this study as a beta lactam antibiotic model. All test bacteria were beta lactamase producing clinical isolates. The combination showed significantly better antibiotic activity on all bacteria tested. The two test substances have synergistic antibiotic activity, and the effect was observed in both Gram positive and Gram negative bacteria. The synergistic antibiotic effect of stigmasterol and ampicillin was evident by the low fractional inhibitory concentration (FIC) index on Checkerboard Assay. The results suggest that the combination of ampicillin and stigmasterol acts additively in the treatment of infections caused by beta-lactamase producing pathogens. In bacterial growth reduction assay, ampicillin and stigmasterol alone exhibited very weak inhibitory effect on the bacterial growth, relative to ethanol control. Comparatively, combination of stigmasterol-ampicillin greatly reduced the colony counts at least by 98.7%. In conclusion, we found synergistic effects of stigmasterol and ampicillin against beta lactamase producing clinical isolates. This finding is important as it shows potential application of stigmasterol as an antibiotic adjuvant.
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Affiliation(s)
- Tong Woei Yenn
- Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, Lot 1988 Kawasan Perindustrian Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka, Malaysia.
| | | | - Nur Amiera Syuhada
- Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, Lot 1988 Kawasan Perindustrian Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka, Malaysia
| | - Leong Chean Ring
- Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, Lot 1988 Kawasan Perindustrian Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka, Malaysia
| | - Darah Ibrahim
- Industrial Biotechnology Research Laboratory, School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Wen-Nee Tan
- School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
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Rajesh KS, Bharath BR, Rao CV, Bhat KI, Bhat KSC, Bhat P. Neutralization of Naja naja venom induced lethality, edema and myonecrosis by ethanolic root extract of Coix lacryma-jobi. Toxicol Rep 2017; 4:637-645. [PMID: 29234602 PMCID: PMC5721210 DOI: 10.1016/j.toxrep.2017.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/09/2017] [Accepted: 11/18/2017] [Indexed: 11/30/2022] Open
Abstract
Oral administration of ethanolic root extract (ERE) at dose levels 100, 200 and 400 mg/kg effectively inhibits Naja naja venom-induced lethality in mice as well as venom-induced proteolysis, fibrinogenolysis, DNase activity. ERE at a dose of 200 mg/kg inhibits myotoxicity induced by Naja naja venom measured by creatine kinase activity in rats. Molecular docking studies revealed that stigmasterol isolated from the ERE is probably responsible for inhibition of Naja naja venom PLA2.
Coix lacryma-jobi, commonly known as job’s tear, is a tall grain-bearing tropical plant of the family Poaceae. The ethanolic root extract (ERE) of the plant was investigated for the first time for anti-venom activity against Indian cobra Naja naja venom. In-vitro studies were conducted to determine neutralization of phospholipase A2 (PLA2) activity of the Naja naja venom by the ERE. ERE showed significant inhibition of PLA2 activity, which was further confirmed from effective neutralization of human red blood cells (HRBC) lysis induced by the venom. In addition, venom-induced proteolysis, fibrinogenolysis, DNase activity were also neutralized by the ERE, which contained carbohydrates, glycolides, resins and tannins. Oral administration of ERE at doses levels 100, 200 and 400 mg/kg effectively inhibited Naja naja venom-induced lethality in mice. Myotoxicity induced by Naja naja venom, measured by creatine kinase activity in rats was significantly neutralized by the ERE at a dose of 200 mg/kg. Stigmasterol, as one of the component isolated from the ERE, was found to have venom phospholipase A2 inhibition potential, which was confirmed by molecular docking studies with PLA2. In summary, these studies indicate the ability of ERE of Coix lacryma-jobi to effectively neutralize the toxic effects of the venom is, in part, contributed by the inhibition of PLA2 activity among other venom-derived factors.
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Affiliation(s)
- K S Rajesh
- Dept. of Pharmacy Practice, NGSM Institute of Pharmaceutical Sciences, Nitte University, Mangalore 575018, Karnataka State, India
| | - B R Bharath
- Dept. of Biotechnology Engineering, NMAM Institute of Technology, Nitte 574110, Udupi, Karnataka State, India
| | - C V Rao
- Dept. of Biotechnology Engineering, NMAM Institute of Technology, Nitte 574110, Udupi, Karnataka State, India
| | - K I Bhat
- Dept. of Pharmaceutical Chemistry, NGSM Institute of Pharmaceutical Sciences, Nitte University, Mangalore 575018, Karnataka State, India
| | - K S Chandrashekhar Bhat
- Dept. of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Madhava Nagar, Manipal 576 104, Udupi, Karnataka State, India
| | - Pritesh Bhat
- Applications Scientist, Schrödinger, Bengaluru, Karnataka, India
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Raczyk M, Kmiecik D, Przybylski R, Rudzińska M. Effect of Fatty Acid Unsaturation on Phytosteryl Ester Degradation. J AM OIL CHEM SOC 2017; 94:701-711. [PMID: 28479606 PMCID: PMC5397657 DOI: 10.1007/s11746-017-2979-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 03/18/2017] [Accepted: 03/20/2017] [Indexed: 12/22/2022]
Abstract
This study examined the thermo-oxidative degradation of stigmasterol fatty acids esters. Stigmasterol stearate, oleate, linoleate and linolenate were synthesized by chemical esterification and their purity evaluated by 1H-NMR and GC-MS. The degradation of stigmasterol esters was examined after heating them at 60 and 180 °C for 1, 2, 4, 8 and 12 h. It was established that stigmasterol esters were prone to thermo-oxidative degradation, with time and temperature affecting the degree of degradation. The unsaturation of fatty acids affected the rate of stigmasteryl ester degradation. The kinetics of StS and StO degradation were similar and the additional double bonds in StL and StLn resulted in their faster decomposition. The esters degraded faster at 180 than at 60 °C. The sterol and fatty acid molecules degraded at different rates, such that the fatty acid moiety deteriorated faster than the sterol at both temperatures, independent of the time of heating and the level of unsaturation.
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Affiliation(s)
- Marianna Raczyk
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland
| | - Dominik Kmiecik
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland
| | - Roman Przybylski
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, Canada
| | - Magdalena Rudzińska
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland
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Yang X, Zhou J, Wang T, Zhao L, Ye G, Shi F, Li Y, Tang H, Dong Q, Zhou X, Xu M, Rong Q, Chen H, Yang X, Cai Y. A novel method for synthesis of α-spinasterol and its antibacterial activities in combination with ceftiofur. Fitoterapia 2017; 119:12-9. [PMID: 28351722 DOI: 10.1016/j.fitote.2017.03.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 02/28/2017] [Accepted: 03/10/2017] [Indexed: 01/23/2023]
Abstract
In this study, we designed a novel method of the synthesis of α-spinasterol from commercially available stigmasterol and explored the combinational effect of the α-spinasterol with ceftiofur in vitro against S. pullorum cvcc533, S. pneumoniae CAU0070, E. coli, and S. aureus. α-Spinasterol was obtained by a key reaction of Bamford-Stevens reaction with a desirable yield for five steps. The combination of α-spinasterol and ceftiofur showed stronger synergetic effect against the four pathogenic strains compared with that of stigmasterol and ceftiofur alone. In time-kill analyses, at concentrations above the MICs, ceftiofur in combination with α-spinasterol exhibited time-dependency and concentration-dependency comparing to time dependency with ceftiofur alone. We conclude that the combination usage of α-spinasterol and ceftiofur is an effective and promising strategy against the four pathogenic bacterial strains in vitro.
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Raczyk M, Kmiecik D, Schieberle P, Przybylski R, Jeleń H, Rudzińska M. Model studies on the formation of volatile compounds generated by a thermal treatment of steryl esters with different fatty acid moieties. Food Res Int 2017; 97:87-94. [PMID: 28578069 DOI: 10.1016/j.foodres.2017.03.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/11/2017] [Accepted: 03/19/2017] [Indexed: 11/27/2022]
Abstract
The consumption of plant sterols is reported to have a beneficial effects on human health, i.e. phytosterols are known for their cholesterol-lowering properties. Whereas, they are prone to oxidation and currently there is ongoing worldwide research aimed at the biological effect of phytosterol oxides. In this study volatile compounds formed during thermal degradation of stigmasteryl esters were identified. The research was conducted using standards of stigmasterol, fatty acids and stigmasteryl esters as well as fat enriched with stigmasteryl esters which were thermally treated at 60°C and 180°C for 12h. Volatile compounds were characterised by SPME-GC-MS. Among the volatiles formed during heating of stigmasteryl esters aldehydes, ketones, alcohols and hydrocarbons were found. The mechanism of the formation of volatile compounds from sterol esters was related to oxidation of steryl and fatty acid moieties. In particular, 2-methyl-3-pentanone and 5-ethyl-6-methyl-3-hepten-2-one were identified as unique degradation products formed from degradation of the steryl moiety specifically, and a mechanism of their formation was suggested. Both volatiles could be a good indicator of thermo-oxidative degradation of functional food products enriched in phytosterols and their esters.
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Affiliation(s)
- Marianna Raczyk
- Poznań University of Life Sciences, Faculty of Food Sciences and Nutrition, Poznań, Poland
| | - Dominik Kmiecik
- Poznań University of Life Sciences, Faculty of Food Sciences and Nutrition, Poznań, Poland
| | - Peter Schieberle
- Deutsche Forschungsanstalt fuer Lebensmittelchemie, Freising, Germany
| | - Roman Przybylski
- University of Lethbridge, Department of Chemistry and Biochemistry, Lethbridge, Canada
| | - Henryk Jeleń
- Poznań University of Life Sciences, Faculty of Food Sciences and Nutrition, Poznań, Poland
| | - Magdalena Rudzińska
- Poznań University of Life Sciences, Faculty of Food Sciences and Nutrition, Poznań, Poland.
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la Torre Fabiola VD, Ralf K, Gabriel B, Victor Ermilo AA, Martha MG, Mirbella CF, Rocio BA. Anti-inflammatory and immunomodulatory effects of Critonia aromatisans leaves: Downregulation of pro-inflammatory cytokines. J Ethnopharmacol 2016; 190:174-182. [PMID: 27282666 DOI: 10.1016/j.jep.2016.06.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/30/2016] [Accepted: 06/03/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Critonia aromatisans (Asteraceae), commonly known as "Chiople", is a cultivated species that is used in Mayan traditional medicine to treat inflammation, joint pain and rheumatism. AIM OF THE STUDY To evaluate the in vivo and in vitro anti-inflammatory and immunomodulatory properties of aqueous and organic extracts prepared from Critonia aromatisans leaves. MATERIALS AND METHODS Methanol, ethyl acetate, methylene chloride, hexanic, and aqueous extracts were obtained from the leaves of C. aromatisans. The anti-inflammatory properties of the extracts were tested in vivo to evaluate their ability to reduce the inflammatory response in the carrageenan-induced hind paw edema model in NIH mice. In addition, to explore the immunomodulatory effects of C. aromatisans, in vitro testing was performed to determine whether C. aromatisans leaf extracts are capable of decreasing macrophage production of nitric oxide (NO), tumour necrosis factor alpha (TNF-α), and cytokines IL-1β, IL-6, and cyclooxygenase 2 (COX-2) without affecting macrophage viability. RESULTS Single orally administered doses (100mg/kg or 200mg/kg) of a hexanic extract of C. aromatisans leaves significantly reduced carrageenan-induced paw edema in mice (P<0.001) by 76% and 84%, respectively. The effect of the extract in this model was generally comparable to those of the standard drugs used. In the in vitro determination, the extracts reduced the amount of NO mainly at 500 and 1000μg/mL. Hexanic extract and subfractions C, D, E, and F at 50 and 100μg/mL produced the lowest concentration of mediators in culture supernatants (protein) and at the mRNA/gene level by the significant down-regulation of cytokines. These findings explain some of the anti-inflammatory activity of this species. Purification of fractions C and D allowed the complete identification of cyclocolorenone, stigmasterol and stigmasterol derivatives as some of their main components. CONCLUSION A hexanic extract of C. aromatisans displayed anti-inflammatory effects, validating the traditional practice of Mayan communities wherein an ointment with a petrolatum base, a non-polar substance, is used to treat inflammation. Additionally, C. aromatisans showed strong in vivo and in vitro activity, and one of the mechanisms of its anti-inflammatory response was shown to be inhibition of the production of NO and pro-inflammatory cytokines. The results of this study provide a pharmacological basis for the use of C. aromatisans leaves in the treatment of inflammatory disorders. The presence of stigmasterol and cyclocolorenone could be the responsibles of the anti-inflammatory activity of this specie. Further studies should be done on the antioxidant and anti-inflammatory properties of cyclocolorenone. The results of this study provide a pharmacological basis for the use of C. aromatisans leaves in the treatment of inflammatory disorders.
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Affiliation(s)
- Villa-De la Torre Fabiola
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Colonia Chuburná de Hidalgo, 97200 Mérida, Yucatán, México.
| | - Kinscherf Ralf
- Institute of Anatomy, Philipps Marburg University, Robert Koch Strasse 8, 35032 Marburg, Germany.
| | - Bonaterra Gabriel
- Institute of Anatomy, Philipps Marburg University, Robert Koch Strasse 8, 35032 Marburg, Germany.
| | - Arana-Argaez Victor Ermilo
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Calle 43 No. 613 x Calle 90 Col. Inalámbrica, C.P. 97069 Mérida, Yucatán, México.
| | - Méndez-González Martha
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Colonia Chuburná de Hidalgo, 97200 Mérida, Yucatán, México.
| | - Cáceres-Farfán Mirbella
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Colonia Chuburná de Hidalgo, 97200 Mérida, Yucatán, México.
| | - Borges-Argáez Rocio
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Colonia Chuburná de Hidalgo, 97200 Mérida, Yucatán, México.
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Pinto NDCC, Machado DC, da Silva JM, Conegundes JLM, Gualberto ACM, Gameiro J, Moreira Chedier L, Castañon MCMN, Scio E. Pereskia aculeata Miller leaves present in vivo topical anti-inflammatory activity in models of acute and chronic dermatitis. J Ethnopharmacol 2015; 173:330-337. [PMID: 26226436 DOI: 10.1016/j.jep.2015.07.032] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 07/21/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Pereskia aculeata Miller (Cactaceae), known as Barbados gooseberry, are used in Brazilian traditional medicine as emollients and to treat skin wounds and inflammation. This study investigated the topical anti-inflammatory activity of the hexane fraction (HF) obtained from the methanol extract of the leaves of this species in models of acute and chronic ear dermatitis in mice. MATERIAL AND METHODS Mice ear edema was induced by topical application of croton oil, arachidonic acid, capsaicin, ethyl-phenylpropiolate and phenol; and by subcutaneous injection of histamine. Ear biopsies were obtained to determine the levels of IL-1β, IL-6 and TNF-α cytokines by ELISA assay. Histopathological analysis was also performed to evaluate the HF activity in croton oil multiple application test. In addition, acute dermal irritation/corrosion test in rats was accomplished. HF chemical characterization was performed by GC-MS analysis. RESULTS HF intensively reduced the inflammatory process induced by all irritant agents used, except for arachidonic acid. This activity is related, at least in part, to the reduction of IL-6 and TNF-α cytokines levels. Moreover, when the glucocorticoid receptor antagonist mifepristone was used, HF failed to respond to the croton oil application.The results strongly suggested a glucocorticoid-like effect, which was reinforced by the presence of considerable amounts of sterol compounds identified in HF. The acute dermal irritaton/corrosion test showed no signs of toxicity. CONCLUSIONS This study showed that the acute and chronic anti-inflammatory activity of P. aculeata leaves is very promising, and corroborates to better understand their ethnopharmacological applications.
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Affiliation(s)
- Nícolas de Castro Campos Pinto
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Danielle Cunha Machado
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Josiane Mello da Silva
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Jéssica Leiras Mota Conegundes
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | - Ana Cristina Moura Gualberto
- Department of Parasitology, Microbiology and Immunology, Biological Sciences Institute, Federal University of Juiz de Fora, 36036 900, Juiz de Fora, MG, Brazil
| | - Jacy Gameiro
- Department of Parasitology, Microbiology and Immunology, Biological Sciences Institute, Federal University of Juiz de Fora, 36036 900, Juiz de Fora, MG, Brazil
| | - Luciana Moreira Chedier
- Department of Botany, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil
| | | | - Elita Scio
- Laboratory of Bioactive Natural Products, Department of Biochemistry, Biological Science Institute, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, MG Brazil.
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Lone SH, Bhat KA. Phytosterols as precursors for the synthesis of aromatase inhibitors: Hemisynthesis of testololactone and testolactone. Steroids 2015; 96:164-8. [PMID: 25697056 DOI: 10.1016/j.steroids.2015.02.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 01/13/2015] [Accepted: 02/09/2015] [Indexed: 12/31/2022]
Abstract
Using β-sitosterol and stigmasterol as precursor materials, a concise and efficient hemisynthesis of aromatase inhibitors: testololactone and testolactone was accomplished in a well-established reaction scheme. It involves highly effective Oppaneur oxidation of both β-sitosterol as well as stigmasterol to generate the required enone moiety in ring 'A' of the desired steroid system. The Oppaneur oxidation products of both β-sitosterol and stigmasterol were then subjected to oxidative cleavage of the side chain to produce 4-androstene-3,17-dione. Baeyer-Villiger oxidation of 4-androstene-3,17-dione using m-CPBA yielded testololactone. Dehydrogenation of 4-androstene-3,17-dione using phenylselenyl chloride in ethyl acetate followed by selenoxide elimination with H2O2 in dichloromethane furnished androstenedienone. Baeyer-Villiger oxidation of the resulting androstenedienone yielded the desired testolactone (overall yield 33%). This expeditious reaction scheme may be exploited for the bulk production of aromatase inhibitors (especially testolactone marketed under the brand name Teslac) from the most abundant and naturally occurring phytosterols like β-sitosterol.
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Affiliation(s)
- Shabir H Lone
- Bioorganic Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Srinagar, 190005 Jammu and Kashmir, India
| | - Khursheed A Bhat
- Bioorganic Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Srinagar, 190005 Jammu and Kashmir, India.
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Smita J, Patil UK. Effect of Ipomea carnea Jacq. flowers on hematological changes in toluene diisocyanate-induced inflammation in Wistar rats. Chin J Nat Med 2014; 12:161-6. [PMID: 24702800 DOI: 10.1016/S1875-5364(14)60027-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Indexed: 11/20/2022]
Abstract
AIM To investigate the active chloroform fraction of the ethanol extract of Ipomoea carnea flowers on hematological changes in toluene diisocyanate-induced inflammation in Wistar rats. METHOD Except for the control group, all of the rats were sensitized with intranasal application of 5 μL of 10% toluene diisocyanate (TDI) for 7 days. One week after second sensitization, all of the rats were provoked with 5 μL of 5% TDI to induce airway hypersensitivity. After the last challenge, blood and bronchoalvelor lavage (BAL) fluid were collected and subjected to total and differential leucocytes count. Flash chromatography was performed on the most active chloroform fraction to isolate an individual component. RESULTS Treatment with the ethanolic extract and its chloroform fraction at an oral dose of 200 mg·kg⁻¹ showed a significant decrease in circulating neutrophil and eosinophil in blood and BAL as compared with standard dexamethasone (DEXA). The structure of the compound obtained from chloroform fraction of Ipomea carnea was elucidated as stigmast-5, 22-dien-3β-ol on the basis of spectral data analysis. CONCLUSION The chloroform fraction was found to be more effective to suppress airway hyper reactivity symptoms, and decreased count of both total and differential inflammatory cells.
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Gan C, Cui J, Su S, Lin Q, Jia L, Fan L, Huang Y. Synthesis and antiproliferative activity of some steroidal thiosemicarbazones, semicarbazones and hydrozones. Steroids 2014; 87:99-107. [PMID: 24928726 DOI: 10.1016/j.steroids.2014.05.026] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 05/24/2014] [Accepted: 05/29/2014] [Indexed: 11/22/2022]
Abstract
Steroidal thiosemicarbazones, semicarbazones and hydrazones have received extensive attention of scientists recently because they exhibit some biological activities such as antibacterial, antiviral and anticancer. Using different steroids as starting materials, through different chemical methods, 24 steroidal compounds with thiosemicarbazone, semicarbazone or hydrazone groups in their structures, were synthesized, characterized by IR, NMR and MS. The antiproliferative activity of the compounds was evaluated against human gastric cancer (SGC-7901) and human liver cancer (Bel-7404) cells. The structure-activity relationship of these compounds was discussed. The results showed that compound 3 and 12a-12c exhibited significant inhibitory activity to Bel-7404 cells, and IC50 values of them were 4.2, 11.0, 7.4 and 15.0μM respectively (Cisplatin, IC50: 11.6μM).
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Affiliation(s)
- Chunfang Gan
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China
| | - Jianguo Cui
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China.
| | - Shaoyang Su
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China
| | - Qifu Lin
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China
| | - Linyi Jia
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China
| | - Lianghua Fan
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China
| | - Yanmin Huang
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, China.
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Dykstra CM, Giles HD, Banerjee S, Pavlostathis SG. Biotransformation of phytosterols under aerobic conditions. Water Res 2014; 58:71-81. [PMID: 24747138 DOI: 10.1016/j.watres.2014.03.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/19/2014] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
Phytosterols are plant-derived sterols present in pulp and paper wastewater and have been implicated in the endocrine disruption of aquatic species. Bioassays were performed to assess the effect of an additional carbon source and/or solubilizing agent on the aerobic biotransformation of a mixture of three common phytosterols (β-sitosterol, stigmasterol and campesterol). The aerobic biotransformation of the phytosterol mixture by a mixed culture developed from a pulp and paper wastewater treatment system was examined under three separate conditions: with phytosterols as the sole added carbon source, with phytosterols and dextrin as an additional carbon source, and with phytosterols added with ethanol as an additional carbon source and solubilizing agent. Significant phytosterol removal was not observed in assays set up with phytosterol powder, either with or without an additional carbon source. In contrast, all three phytosterols were aerobically degraded when added as a dissolved solution in ethanol. Thus, under the experimental conditions of this study, the bioavailability of phytosterols was limited without the presence of a solubilizing agent. The total phytosterol removal rate was linear for the first six days before re-spiking, with a rate of 0.47 mg/L-d (R(2) = 0.998). After the second spiking, the total phytosterol removal rate was linear for seven days, with a rate of 0.32 mg/L-d (R(2) = 0.968). Following the 7th day, the phytosterol removal rate markedly accelerated, suggesting two different mechanisms are involved in phytosterol biotransformation, more likely related to the production of enzyme(s) involved in phytosterol degradation, induced under different cell growth conditions. β-sitosterol was preferentially degraded, as compared to stigmasterol and campesterol, although all three phytosterols fell below detection limits by the 24th day of incubation.
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Affiliation(s)
- Christy M Dykstra
- School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0512, USA
| | - Hamilton D Giles
- School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0512, USA
| | - Sujit Banerjee
- School of Chemical and Biomolecular Engineering, Institute of Paper Science and Technology, Georgia Institute of Technology, 500 10th Street, N.W., Atlanta, GA 30318, USA
| | - Spyros G Pavlostathis
- School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0512, USA.
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Cui J, Lin Q, Gan C, Yao Q, Su W, Huang Y. Synthesis and cytotoxic activity of some 4,6-diaza-A,B-dihomo-steroid bilactams. Steroids 2014; 79:14-8. [PMID: 24200959 DOI: 10.1016/j.steroids.2013.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 10/15/2013] [Accepted: 10/23/2013] [Indexed: 11/25/2022]
Abstract
Using cholesterol, stigmasterol and sitosterol as starting materials, some 4,6-diaza-A,B-dihomo-steroid bilactams were synthesized via two different synthetic routes by oxidation, reduction, oximation, Beckman rearrangement, etc. The cytotoxic activity of the synthesized compounds against SGC 7901 (human ventriculi carcinoma), Bel-7404 (human liver carcinoma), HeLa (human cervical carcinoma) and HT-29 (colonic carcinoma) cancer cells were investigated. The results showed that compounds 2 and 7b displayed a good cytotoxic activity to the SGC 7901, Bel 7404 and HeLa tumor cell lines with the IC50 values of 11.6, 16.4, 13.9 and 13.1, 21.8, 13.1 μmol/L, respectively. Their cytotoxic activity is almost same as cisplatin to these cells. The information obtained from the studies may be useful for the design of novel chemotherapeutic drugs.
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Affiliation(s)
- Jianguo Cui
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Qifu Lin
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Chunfang Gan
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Qiucui Yao
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Wei Su
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China
| | - Yanmin Huang
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning 530001, PR China.
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Nguyen HTM, Neelakadan AK, Quach TN, Valliyodan B, Kumar R, Zhang Z, Nguyen HT. Molecular characterization of Glycine max squalene synthase genes in seed phytosterol biosynthesis. Plant Physiol Biochem 2013; 73:23-32. [PMID: 24036394 DOI: 10.1016/j.plaphy.2013.07.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 07/29/2013] [Indexed: 05/21/2023]
Abstract
The reaction catalyzed by squalene synthase (EC.2.5.1.21) that converts two molecules of farnesyl pyrophosphate to squalene represents a crucial branch point of the isoprenoid pathway in diverting carbon flux towards the biosynthesis of sterols. In the present study two soybean squalene synthase genes, GmSQS1 and GmSQS2, were identified in the soybean genome and functionally characterized for their roles in sterol biosynthesis. Both genes encode a deduced protein of 413 amino acids. Complementation assays showed that the two genes were able to convert yeast sterol auxotrophy erg9 mutant to sterol prototrophy. Expression of GmSQS1 and GmSQS2 was ubiquitous in roots, stem, leaves, flower and young seeds of soybean, however GmSQS1 transcript was preferential in roots while GmSQS2 transcript was more in leaves. Their expression was lower in response to dehydration treatments suggesting they might be negative regulators of water stress adaptation. Transgenic Arabidopsis plants overexpressing GmSQS1 driven by either constitutive or seed-specific promoters showed increases in the major end product sterols: campesterol, sitosterol and stigmasterol, which resulted in up to 50% increase in total sterol content in the seeds. The increase in the end product sterols by GmSQS1 overexpression was at the level achievable by previously reported overexpression of individual or combination of other key enzymes in the sterol pathway. Together the data demonstrate that soybean SQS genes play an important role in diverting carbon flux to the biosynthesis of the end product sterols in the seeds.
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Affiliation(s)
- Hanh T M Nguyen
- Division of Plant Sciences and National Center for Soybean Biotechnology, University of Missouri, Columbia, MO 65211, USA
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Ruggiero A, Vitalini S, Burlini N, Bernasconi S, Iriti M. Phytosterols in grapes and wine, and effects of agrochemicals on their levels. Food Chem 2013; 141:3473-9. [PMID: 23993509 DOI: 10.1016/j.foodchem.2013.05.153] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 05/09/2013] [Accepted: 05/31/2013] [Indexed: 11/28/2022]
Abstract
To improve the knowledge on the chemical diversity and complexity of grapevine, we investigated the plant sterol content of berry and seed tissues at pre-véraison and véraison stages in 2009 and 2010. We also assessed the effects of benzothiadiazole and chitosan elicitors on content of sterols in grapes and their levels in the corresponding experimental wines. β-Sitosterol was the most abundant component in berry tissues, in both growth stages and years, with the highest amounts in the flesh and skin at pre-véraison and véraison, respectively. Stigmasterol and campesterol were present in lower concentrations in both phenological stages and vintages. During the transition from pre-véraison to véraison, phytosterols decreased in all tissues, in both years, apart from stigmasterol in seeds. In addition, the results showed that the plant activators were more effective than conventional fungicides in rising the levels of sterols, particularly β-sitosterol, both in grapes and in microvinificates.
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Affiliation(s)
- Antonietta Ruggiero
- Department of Agricultural and Environmental Sciences, Milan State University, via Celoria 2, 20133 Milan, Italy.
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Sajjadi S, Shokoohinia Y, Mehramiri P. Isolation and characterization of steroids, phthalide and essential oil of the fruits of Kelussia odoratissima Mozaff., an endemic mountain celery. Res Pharm Sci 2013; 8:35-41. [PMID: 24459474 PMCID: PMC3895298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Kelussia odoratissima Mozaff. is an Iranian endangered endemic edible plant with enormous use in the middle region of Iran as food and spice especially yogurt seasoning, and as medicinal herb for anti-inflammatory and cardiovascular purposes. Although antioxidant, anti-inflammatory and antilipidemic effects of this plant have so far been studied, but chemical analyses of the non volatile constituents of the plant have not yet been reported. Therefore, identification of chemical constituents of different parts of plant was investigated in the present study. In this direction, two steroids including stigmasterol and β-sitosterol and one phthalide namely 3-butyliden-4,5-dihydrophthalide were isolated from the plant fruits. In addition, the essential oil composition of the fruits was studied. Thirty eight compounds were identified, of which the major components were found to be Z-ligustilide (29.2%), germacrene-B (15.9%) and germacrene-D (15.5%). According to the previous bioassays of the isolated compounds such as anti-inflammatory and anti-lipidemic effects of phthalides and steroids, a chemical-biological relation can be postulated.
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Affiliation(s)
- S.E. Sajjadi
- Department of Pharmacognosy and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Y. Shokoohinia
- Department of Pharmacognosy and Biotechnology, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran,
Corresponding author: Y. Shokoohinia, this paper is extracted from the Pharm.D thesis No. 385505 Tel. 0098 831 4276488, Fax. 0098 831 4276493 E-mail:
| | - P. Mehramiri
- Department of Pharmacognosy and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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